Audio analysis of footage of an Israeli attack on an aid worker convoy last month suggests that some of the shots were fired from as little as 12 metres away.
The Israel Defence Forces (IDF) has admitted killing the unarmed medics, saying that the convoy was acting “suspiciously”.
A spokesman told journalists in a 5 April briefing that an initial investigation had found there was “no firing from close distance” during the incident on 23 March.
Sky News has spoken to two independent audio forensic experts who analysed a 19-minute video of the attack filmed by Rifaat Radwan, one of the medics who was killed.
The expert analysis shared with Sky News suggests that the first gunshots heard in the video are likely 40-50 metres away from the phone recording the footage, but gunshots heard later are closer in distance – around 12-18 metres away.
Image: Audio from the first three seconds of the attack captures multiple gunshots being fired.
In response to our findings, the IDF said a preliminary inquiry indicated that troops “opened fire due to a perceived threat following an encounter in the area”.
The shooting continues for six and a half minutes
The 19-minute video shows a convoy of marked ambulances and a fire engine travelling south along a road east of Rafah city.
A spokesman for the Israeli military initially claimed the emergency vehicles were travelling without any headlights or emergency signals, but the IDF later backtracked after the video disproved this claim. All vehicles visible in the convoy have their emergency lights on.
The video below shows the first gunshots fired during the attack.
After analysing the video, two audio forensic analysts told Sky News that “multiple shooters” were likely involved in the incident and “over 100 gunshots” were fired.
Audible gunshots are first heard 13 minutes and 35 seconds into the video, shortly after the convoy arrives at the scene of an earlier attack. The shooting continues for six and a half minutes.
Professor Rob Maher from Montana State University, an audio forensics expert working as an independent consultant, said: “The first few audible gunshots are likely 40-50 metres away from the (phone) microphone, based upon the crack-pop acoustic sequence and an assumption about the bullet speed.
“With so many audible gunshots, it seems likely that there were many firearms involved, and that those shooters were at different locations at different times during the many minutes of shooting.”
Most bullets travel faster than the speed of sound, this is called ‘supersonic’.
When a supersonic bullet is fired, the first sound you hear is the sharp ‘crack’ made by the bullet’s shockwave. After that, you hear the ‘bang’ from the gun firing, or muzzle blast. This second sound travels more slowly – at the speed of sound.
The time between the ‘crack’ and the ‘bang’ tells you how far away the gun is from the microphone. If the gun is far away, there’s a bigger gap between the two sounds. If it’s close, the gap is much shorter.
Another expert, Steven Beck of Beck Audio Forensics, estimated the distance of the first few gunshots to “around 40 metres”.
He added that the first audible shots are “most likely military rifles or carbines firing supersonic bullets that pass close to the recorder – meaning they are being fired at”.
Image: Analysis suggests a reduction in the crack-pop timing from 72 to 20 ms. This indicates that the second shot is fired from a closer range. Picture – Robert Mayer
Both forensic audio experts told us that as the video continues, the gunshots appear much closer – at a distance ranging between 12 and 18 metres. They explain that the “crack-bang” timing reduces in comparison to the start of the gunfire – indicating that the distance shortens.
Mr Beck said at the end of the video “there are more shockwaves followed by muzzle blasts. The shooter(s) at these times is much closer, with distances of 12m – 18m”.
Due to the overlapping gunshots heard in the video, from the audio it is not currently possible to rule out whether gunshots were fired back.
Prior to the attack, the ambulance from which the video is filmed had been searching for a group of paramedics who reported that they had been attacked by Israeli troops.
The ambulance travelled from southern Rafah up to the coast, before performing a U-turn and joining a convoy of other emergency vehicles.
The shooting began as the convoy arrived at the scene of the first attack.
In a statement to Sky News, the IDF said it is “conducting an inquiry into the incident, which took place in a combat zone, to uncover the truth.
“All the claims raised regarding the incident will be examined and presented in a detailed and thorough manner for a decision on how to handle the event.”
The IDF also says that six of the individuals killed were later identified as “Hamas terrorists”, though no evidence has been provided to support this claim.
The Data and Forensics team is a multi-skilled unit dedicated to providing transparent journalism from Sky News. We gather, analyse and visualise data to tell data-driven stories. We combine traditional reporting skills with advanced analysis of satellite images, social media and other open-source information. Through multimedia storytelling we aim to better explain the world while also showing how our journalism is done.
Giving a news conference in Downing Street, he said: “A Russian spy ship, the Yantar, is on the edge of UK waters north of Scotland, having entered the UK’s wider waters over the last few weeks.
“This is a vessel designed for gathering intelligence and mapping our undersea cables.
“We deployed a Royal Navy frigate and RAF planes to monitor and track this vessel’s every move, during which the Yantar directed lasers at our pilots.
“That Russian action is deeply dangerous, and this is the second time this year that this ship, the Yantar, has deployed to UK waters.”
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Mr Healey added: “So my message to Russia and to Putin is this: we see you, we know what you’re doing, and if the Yantar travels south this week, we are ready.”
His warning comes following a report from MPs that the UK lacks a plan to defend itself from a military attack, despite the government promising to boost readiness with new arms factories.
At least 13 sites across the UK have been identified for new factories to make munitions and military explosives, with Mr Healey expecting the arms industry to break ground at the first plant next year.
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The report, by the Commons Defence Committee, said the UK “lacks a plan for defending the homeland and overseas territories” as it urged the government to launch a “co-ordinated effort to communicate with the public on the level of threat we face”.
Mr Healey acknowledged the dangers facing the UK, saying the country was in a “new era of threat” that “demands a new era for defence”.
Giving more details on the vessel, he said it was “part of a Russian fleet designed to put and hold our undersea infrastructure and those of our allies at risk”.
Image: Russian Ship Yantar. Pic: Ministry of Defence
He said the Yantar wasn’t just part of a naval operation but part of a Russian programme driven by Moscow’s Main Directorate of Deep-Sea Research, or GUGI, which is “designed to have capabilities which can undertake surveillance in peacetime and sabotage in conflict”.
“That is why we’ve been determined, whenever the Yantar comes into British wider waters, we track it, we deter it and we say to Putin we are ready, and we do that alongside allies,” he added.
Asked by Sky News’ political correspondent Rob Powell whether this was the first time that lasers had been used by a Russian vessel against pilots, Mr Healey replied: “This is the first time we’ve had this action from Yantar directed against the British RAF.
“We take it extremely seriously. I’ve changed the Navy’s rules of engagement so that we can follow more closely, monitor more closely, the activities of the Yantar when it’s in our wider waters. We have military options ready.”
Mr Healey added that the last time the Yantar was in UK waters, the British military surfaced a nuclear-powered attack submarine close to the ship “that they did not know was there”.
The Russian embassy has been contacted for comment.
More than 250 passengers on board a ferry that ran aground off the South Korean coast have been rescued, according to the coastguard.
It said the Queen Jenuvia 2, travelling from the southern island of Jeju to the southwestern port city of Mokpo, hit rocks near Jindo, off the country’s southwest coast, late on Wednesday.
A total of 267 people were on board, including 246 passengers and 21 crew. Three people had minor injuries.
Image: All on board were rescued. Pic: Yonhap/Reuters
Footage showed passengers wearing life vests waiting to be picked up by rescue boats, which were approaching the 26,000-tonne South Korean ferry.
Its bow seemed to have become stuck on the edge of a small island, but it appeared to be upright and the passengers seemed calm.
Weather conditions at the scene were reported to be fair with light winds.
South Korea’s Prime Minister Kim Min-seok ordered all available boats and equipment to be used to rescue those on board, his office said.
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The coastguard received a report of the incident late on Wednesday, and immediately deployed 20 vessels and a plane to join the rescue effort.
It was not immediately clear what caused the vessel to run aground.
The vessel can carry up to 1,010 passengers and has multiple lower decks for large vehicles and passenger vehicles, according to its operator Seaworld Ferry.
In 2014, more than 300 people, mostly schoolchildren heading to Jeju on a school trip, died when the Sewol ferry sank.
It was one of the country’s worst disasters.
The ship went down 11 years ago near the site of Wednesday’s incident, though further off Jindo.
After taking a turn too fast, the overloaded and illegally-modified ferry began listing.
It then lay on its side as passengers waited for rescue, which was slow to come, before sinking as the country watched on live television.
Many of the victims were found in their cabins, where they had been told to wait by the crew while the captain and some crew members were taken aboard the first coastguard vessels to arrive at the scene.
The Yantar may look scruffy and unthreatening but below the surface it’s the kind of ship a Bond villain would be proud of.
In hangars below decks lurk submersibles straight out of the Bond film Thunderball. Two Consul Class mini manned subs are on board and a number of remotely operated ones.
It can “undertake surveillance in peacetime and sabotage in conflict”, in the words of Britain’s Defence Secretary John Healey.
Image: The Russian spy ship Yantar. Pic: MOD/PA
Cable-cutting equipment combined with surveillance and intelligence gathering capabilities make this a vessel to be reckoned with.
Most worryingly though, in its most recent tangle with RAF planes sent to stalk it, the Yantar deployed a laser to distract and dazzle the British pilot.
Matthew Savill, from the Royal United Services Institute, told Sky News this was potentially a worrying hostile act.
He said: “If this had been used to dazzle the pilot and that aircraft had subsequently crashed, then maybe the case could be made that not only was it hostile but it was fundamentally an armed attack because it had the same impact as if they’d used a weapon.”
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The Yantar is off our waters and here to threaten the West’s Achilles heel, says our government. Undersea infrastructure is essential to our hyper-connected world.
Undersea cables are the vital nervous system of Western civilisation. Through them courses the data that powers our 21st century economies and communications systems.
Pipelines are equally important in supplying fuel and gas that are vital to our prosperity. But they stretch for mile after mile along the seabed, exposed and all but undefended.
Their vulnerability is enough to keep Western economists and security officials awake at night, and Russia is well aware of that strategic weakness.
That is why some of the most sophisticated kit the Russian military possesses is geared towards mapping and potentially threatening them.
The Yantar’s concealed capabilities are currently being used to map that underwater network of cables and pipelines, it’s thought, but they could in the future be used to sabotage them. Russia has been blamed for mysterious underwater attacks in the recent past.
A more kinetic conflict striking at the West’s soft underwater underbelly could have a disastrous impact. Enough damage to internet cables could play havoc with Western economies.
It is a scenario security experts believe the West is not well enough prepared for.
Putting the Yantar and its Russian overseers on watch is one thing; preventing them from readying for such a doomsday outcome in time of war is quite another.