An initial inquest was told the three were declared dead at the scene of the crash.
The hearing was adjourned pending the outcome of further histology and toxicology tests.
Sophie Russon, 20, and Shane Loughlin, 32, were both injured but survived.
Image: Shane Loughlin and Sophie Russon survived the crash
Image: Tributes were laid and a vigil was held at the crash site
The accident happened near the St Mellons area of Cardiffon the A48(M).
A Volkswagon Tiguan veered off a slip road approaching a roundabout at 2.03am and came to rest in some trees.
The five were not discovered until Monday 6 March, around 46 hours after the crash took place.
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March: Vigil held for Cardiff car crash victims
The Independent Office for Police Conduct (IOPC) is continuing to investigate the length of time taken by Gwent Police and South WalesPolice to find the group.
Court papers seen by Sky News reveal the group had been drinking alcohol and inhaling nitrous oxide, commonly known as laughing gas, prior to the collision.
Image: The scene near the St Mellons area of Cardiff
The group had been on a night out at The Muffler social club in Newport on the evening of 3 March, before travelling just under 40 miles (64km) to the Trecco Bay Caravan Park in Porthcawl.
They were last seen at about 2am in the Pentwyn area of Cardiff, where a sixth member of the group was dropped off.
The details emerged at the hearing of Joel Lia at Cardiff Magistrates’ Court, which was held behind closed doors.
Lia, 28, was the sixth member of the group who had been driving the vehicle an hour before the crash.
He was charged with driving without a licence or insurance in Porthcawl.
According to the court document: “All other persons in the vehicle were intoxicated, by Joel’s admission, as they had been drinking alcohol and inhaling nitrous oxide throughout the course of the evening.”
Lia’s case is being handled under a system called the single justice procedure where magistrates deal with non-custodial criminal prosecutions in private.
He pleaded guilty to both charges and the case was adjourned until 24 August.
Liverpool have won the Premier League title after a 5-1 victory over Tottenham at Anfield.
Arne Slot’s men did it in impressive style, turning over Spurs in a convincing win.
It was a rocky start for the Reds after Dominic Solanke put the north London side ahead.
However, fortunes quickly changed in the first half as Liverpool scored three times without a response.
Image: Captain Virgil van Dijk (centre) celebrates. Pic: Reuters
Image: Salah on his knees in celebration after the final whistle. Pic: AP
Image: Liverpool’s Harvey Elliott (below) and Jarell Quansah celebrate after full-time. Pic: PA
Image: Slot cheers after the full-time whistle. Pic: AP
In the second half, it took until the 63rd minute for Mohamed Salah to make it 4-1 before a fifth followed.
The Reds have won the title in manager Arne Slot’s first season in charge, and move level with fierce rivals Manchester United on 20 league championships.
But it makes them arguably the most successful English club ever as they have won more European Cup or Champions League titles.
Liverpool captain Virgil van Dijk told Sky Sports after the final whistle: “It’s special and it’s something that we don’t take for granted. It’s amazing.
“A lot of emotions before the game, during the whole week, but we got the job done and we (are) truly deserved champions of England. (Liverpool is) the most beautiful club in the world and I think we deserve all of this. Let’s enjoy the next couple of weeks and let it sink in.”
Image: Liverpool’s Kostas Tsimikas poses with a Premier League trophy cut out. Pic: Reuters
Image: Manager Arne Slot and his team after the final whistle. Pic: AP
Slot took over last summer from Jurgen Klopp, who guided them to their previous and maiden Premier League title triumph in 2020, when the COVID-19 lockdown saw matches played behind closed doors.
He is the first Dutch manager to win the Premier League and the fifth man to do so in a debut campaign after Jose Mourinho, Carlo Ancelotti, Manuel Pellegrini, and Antonio Conte.
Speaking to Sky Sports he said: “They [the players] did an outstanding job today. The main job was to win. Everyone said we had got it already. But we had to make sure and we got over the line.”
Several players, including Alisson Becker, Trent Alexander-Arnold, Virgil van Dijk, and Mohamed Salah, played leading roles in both the 2025 and 2020 campaigns.
Van Dijk and Salah recently signed new contracts extending their careers at the club.
Image: Mohamed Salah takes a selfie with fans after scouring the fourth Liverpool goal. Pic: AP
Image: Fans at Anfield during the game. Pic: AP
Image: Fans in the stands at Anfield before full-time. Pic: Reuters
Liverpool will have to wait until the final game of the season – at home to Crystal Palace on 25 May – to be presented with the Premier League trophy.
It will be the first time the club’s fans will have seen their side lift the top-flight title in person since 1990.
This breaking news story is being updated and more details will be published shortly.
Two pro-Palestinian demonstrators have thrown red powder on Tower Bridge – just moments before leading runners in the London Marathon went past.
The protesters were arrested on suspicion of causing a public nuisance and remain in custody, said the Metropolitan Police.
A video shared by Youth Demand, which is calling for a trade embargo on Israel, shows two people jumping over a barrier that separates spectators from the race course.
The pair, wearing t-shirts that say “Youth Demand: Stop Arming Israel”, are then seen standing in the middle of the road on the bridge.
Image: Pic: LNP
They throw red powder in the air as an official marathon car goes past displaying the race time.
A motorbike with a cameraman on board continues along the route, while a second motorbike stops and one of the riders gets off and pushes the pair out of the way, just before the men’s elite runners pass.
Several police officers then jump over the barrier and detain the pair, the footage shows.
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There appeared to be no impact on the marathon.
More than 56,000 participants were expected to take part in the 26.2-mile race through the capital.
Sabastian Sawe of Kenya won the men’s elite race in a time of two hours, two minutes and 27 seconds, while Ethiopia’s Tigst Assefa shattered the women’s-only world record in two hours, 15 minutes and 50 seconds.
Assefa beat the previous best of two hours, 16 minutes and 16 seconds set last year in London by Kenyan Peres Jepchirchir.
The Metropolitan Police said in a statement: “At around 10.38am, two protesters from Youth Demand jumped over barriers at Tower Bridge and threw red paint on to the road.
“Marathon event staff intervened to remove the protesters from the path of the men’s elite race which was able to pass unobstructed.”
The force added that they were “quickly supported by police officers who arrested the protesters on suspicion of causing a public nuisance”.
The Met said the paint “appeared to be chalk-based” and was not expected to “present a hazard to runners yet to pass this point”.
Kemi Badenoch has not ruled out forming coalitions at a local level with Reform after the council elections next week.
Speaking to Sunday Morning with Trevor Phillips, the Conservative leader did however categorically rule out a pact with Nigel Farage’s party on a national level.
“I am not going into any coalition with Nigel Farage… read my lips,” she said.
However, she did not deny that deals could be struck with Reform at a local level, arguing that some councils might be under no overall control and in that case, “you have to do what is right for your local area”.
“You look at the moment, we are in coalition with Liberal Democrats, with independents,” she said. “We’ve been in coalition with Labour before at local government level.
“They [councillors] have to look at who the people are that they’re going into coalition with and see how they can deliver for local people.”
She added: “What I don’t want to hear is talks of stitch-ups or people planning things before the results are out. They have to do what is right for their communities.”
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A total of 23 councils are up for grabs when voters go to the polls on Thursday 1 May – mostly in places that were once deemed Tory shires, until last year’s general election.
It includes 14 county councils, all but two of which have been Conservative-controlled, as well as eight unitary authorities, all but one of which are Tory.
Ms Badenoch has set expectations low for the Tories, suggesting they could lose all the councils they are contesting.
The last time this set of councils were up for election was in 2021, when the Conservative Party was led by Boris Johnson who was riding high from the COVID vaccine bounce.
This breaking news story is being updated and more details will be published shortly.