A weapons supervisor who was jailed for involuntary manslaughter over the fatal shooting of Halyna Hutchins on the set of the Alec Baldwin movie, Rust, has been freed.

Hannah Gutierrez-Reed was released on parole from the Western New Mexico Correctional Facility in Grants on Friday, after serving her 18-month sentence, NBC News, Sky’s US partner said, quoting New Mexico Corrections Department spokesperson, Brittany Roembach.

Gutierrez-Reed was released to return home to Bullhead City, Arizona, where she will be on parole for a year for the manslaughter case.

She was in charge of weapons during the production of the Western film in Santa Fe, New Mexico, in October 2021, when a prop gun held by star and co-producer Alec Baldwin went off during a rehearsal.

Cinematographer Hutchins died following the incident, while director Joel Souza was injured.

Gutierrez-Reed was acquitted of charges of tampering with evidence in the investigation, but will be on probation over a separate conviction for unlawfully carrying a gun into a Santa Fe bar where firearms are banned weeks before Rust began filming.

Involuntary manslaughter means causing someone’s death due to negligence, without intending to.

At her 10-day trial in New Mexico in March last year, prosecutors blamed Gutierrez-Reed for unwittingly bringing live ammunition onto the set of Rust and for failing to follow basic gun safety protocols.

The 18-month sentence she was given was the maximum available for the offence.

Baldwin, 67, was also charged with involuntary manslaughter, but the case was dramatically dismissed by the judge during his trial last July over mistakes made by police and prosecutors, including allegations of withholding ammunition evidence from the defence.

The actor had always denied the charge, maintaining he did not pull the gun’s trigger and that others on the set were responsible for safety checks on the weapon.

Rust was finished in Montana and released earlier this month, minus the scene they were working on when Hutchins was shot, Souza, speaking at November’s premiere in Poland, said.

Rust is billed as the story of a 13-year-old boy who, left to fend for himself and his younger brother following their parents’ deaths in 1880s Wyoming, goes on the run with his long-estranged grandfather after being sentenced to hang for the accidental killing of a local rancher.

Scientists are turning detective to work out what British dolphins are up to beneath the waves – by using forensic-style DNA techniques on their poo.

Conservationists have been studying the 250 or so bottlenose dolphins living in Cardigan Bay, west Wales, over many decades.

Up to now, they have only been able to observe the dolphins as they surface to breathe or play, identifying the animals from the unique marks on their dorsal fins to establish which animals were hanging out together and where.

But now for the first time scientists are using DNA excreted by the dolphins in their poo to build a more complete picture of their lives.

It allows them to identify the sex of individuals and how they are related to other animals. Signficantly, it also shows what the dolphins have been eating.

Dr Sarah Perry, marine conservation manager at The Wildlife Trust of South and West Wales, said: “In order to be able to conserve them, we need to know why they’re here and a big a missing part of that is, what they’re feeding on.

“Is that changing at different times of the year? Are certain species of fish more important to them early on in the year, in the spring, and the summer months, and then does that change over the autumn and winter months?

“Are certain species important for younger animals? We don’t know that, so that kind of information, we need to find out.”

Catching dolphin poo involves a large element of luck.

The animals occasionally eject a cloud of waste material as they swim.

But it quickly sinks, so the scientists’ boat needs to be close enough for them to scoop it out of the sea with a fine-meshed net.

A sample is then sent to a lab at the University of Aberystwyth, where DNA is extracted for analysis.

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Dolphins adapting to effects of climate change

Results so far suggest the dolphins are having to adapt to a change in fish species as the water warms.

Dr Niall McKeown, a marine biologist at the university, said: “We are seeing large amounts of sardine, sprat, and anchovy.

“This is quite interesting because these are species that are known to have increased in abundance in Welsh waters in recent years in response, we believe, to climate change.”

Scientists unsure why dolphin numbers are falling

But questions remain about the dolphins.

The number in Cardigan Bay seems to be falling, but scientists are not sure whether that’s a natural cycle or a response to other factors.

Boat noise and disturbance from some fishing activities, such as scallop dredging, could impact the animals, which rely on sound to communicate.

Dr Parry said: “How lucky are we to have such an important population of dolphins here? It’s crazy that we really don’t know that much about them.”

Sir Alan Bates has accused the government of presiding over a “quasi kangaroo court” for Post Office compensation.

Writing in The Sunday Times, the campaigner, who led a years-long effort for justice for sub-postmasters, revealed he had been given a “take it or leave it” offer that was less than half of his original claim.

“The sub-postmaster compensation schemes have been turned into quasi-kangaroo courts in which the Department for Business and Trade sits in judgement of the claims and alters the goal posts as and when it chooses,” he said.

“Claims are, and have been, knocked back on the basis that legally you would not be able to make them, or that the parameters of the scheme do not extend to certain items.”

More than 900 sub-postmasters were prosecuted between 1999 and 2015 after faulty Horizon accounting software made it look as if money was missing from their accounts.

Many are still waiting for compensation despite the previous government saying those who had their convictions quashed were eligible for £600,000 payouts.

After the Post Office terminated his contract over a false shortfall in 2003, Sir Alan began seeking out other sub-postmasters and eventually took the Post Office to court.

A group litigation order (GLO) scheme was set up to achieve redress for 555 claimants who took the Post Office to the High Court between 2017 and 2019.

Sir Alan, who was portrayed by actor Toby Jones in ITV drama Mr Bates Vs The Post Office, has called for an independent body to be created to deliver compensation.

He added that promises the compensation schemes would be “non-legalistic” had turned out to be “worthless”.

It is understood around 80% of postmasters in Sir Alan’s group have accepted a full and final redress, or been paid most of their offer.

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A Department for Business and Trade spokesperson told Sky News: “We pay tribute to all the postmasters who’ve suffered from this scandal, including Sir Alan for his tireless campaign for justice, and we have quadrupled the total amount paid to postmasters since entering government.

“We recognise there will be an absence of evidence given the length of time which has passed, and we therefore aim to give the benefit of the doubt to postmasters as far as possible.

“Anyone unhappy with their offer can have their case reviewed by a panel of experts, which is independent of the government.”