Key points
- Alec Baldwin is on trial in Santa Fe, New Mexico, charged with involuntary manslaughter over the death of Halyna Hutchins in 2021 - watch live above
- Warning: Live stream may contain images or language some may find distressing
- Court shown footage of medics attempting to save Halyna Hutchins
- Actor requested 'biggest gun available', court hears
- 911 call played to jury
- Baldwin 'like an actor out of character' after shooting
- Ms Hutchins was a cinematographer on the set of the star's Western film Rust in New Mexico - she died after a gun held by Baldwin went off on set
- The actor has pleaded not guilty - he has repeatedly said the gun went off accidentally and he did not pull the trigger. He faces up to 18 months in prison if convicted
- Explainer:The key things you need to know
- Live reporting by Gemma Peplow, arts and entertainment reporter
Goodnight
That's all from our coverage of the opening of Alec Baldwin's trial.
Following opening statements from both the prosecution and the defence at the start of the hearing, we also heard from some of the witnesses called by the prosecution.
There will be more over the coming days before the defence gets to call its witnesses. At the minute, it is not known whether or not Baldwin himself will testify.
Thanks for following - keep an eye on the Sky News website for further coverage of the trial as it develops.
Playing 'make believe' and 'violating' rules? Or an actor who committed no crime?
Jurors sitting for the first day of Alec Baldwin's trial in New Mexico were painted two different pictures as both the prosecution and the defence teams made their opening statements.
According to the prosecution, Baldwin, 66, "played make believe with a real gun and violated the cardinal rules of firearm safety" on the day of the fatal shooting on the set of his Western film Rust.
But the defence team argued this was not the case. Cinematographer Halyna Hutchins' death was "an unspeakable tragedy", they said - but Baldwin "was an actor, acting" and "committed no crime".
During day one of the trial, jurors were also shown footage of medics desperately trying to save Ms Hutchins, described as a "vibrant 42-year-old rising star", and treat director Joel Souza, who was also wounded.
You can read our report here.
Watch: Alec Baldwin's first day at trial
That's it for the first day of evidence, with the trial scheduled to run until next Friday, 19 July.
You can see clips from some of today's evidence in court here.
Court ends
Court has now finished for the day.
The judge reminds the jury not to talk to anyone about the trial and not to search online.
So that's all the evidence from day one. We'll have a recap here soon.
Could the firearm 'go off without the trigger being pulled'?
Marissa Poppell is now being shown a picture of the ammunition taken from the holster assigned to Alec Baldwin. She identifies the round she believed was live.
The court hears she also collected other holsters, one of which contained a suspected live round, and again she identifies this.
The live rounds look different as they have silver primers at the bottom, the court is shown.
Loose ammunition collected from the top of the props cart on set also included two suspected live rounds, she says, while the boxes of dummies retrieved included one suspected live round.
When the prop truck was later searched, with about 1,000 to 1,500 rounds examined, there were no live rounds found, the court hears.
The court is now being shown a picture of the projectile removed from Rust director Joel Souza's shoulder, which was also photographed and then sent to the FBI lab for examination.
Ms Poppell is now being asked about the FBI tests requested on the gun, which she says were to determine whether or not the gun could "go off without the trigger being pulled".
Asked about the search of PDQ Warehouse in Albuquerque, owned by Seth Kenney, the court hears the ammunition for Rust was supplied from here.
Live ammunition was found at the business, Ms Poppell says, but "visibly" it wasn't identical to that found on the set of Rust. The live ammunition collected from PDQ was also sent to the FBI so that gunpowder inside could be compared to that found in the live rounds on the Rust set, the court hears.
Crime scene technician believes she found six live rounds from Rust set
The court hears this was the first time Marissa Poppell, a crime scene technician, had been called to a film set.
She goes through some of the distinguishing characteristics of dummy rounds, such as having a small hole in the side or being filled with a ball bearing - hence the shaking test described earlier in the hearing.
Ms Poppell says many of the dummy rounds collected from the set made a rattling noise. She also says she collected blanks.
When she examined the ammunition, she says she developed suspicions. There were several rounds that did not make the rattle noise, she says, nor did they have a hole in the side.
"My suspicion is that they were live rounds," she tells jurors. These were sent to the FBI for testing, the court hears.
Ms Poppell is being asked about the boxes labelled dummies that were retrieved from the scene. She says she suspected one round in these was live.
In total, she says she believes she found five live rounds and a spent casing from a live round, "so six in total".
She tells the court about a holster which had ammunition inside and says she suspected one round in the holster was live.
The actor assigned to the holster was Alec Baldwin, she tells the court.
Court hears of props search warrants issued in aftermath of shooting
Crime scene technician Marissa Poppell is now being questioned by Kari Morrissey, for the prosecution.
The court hears Ms Poppell arrived at the Rust set between 2.30pm and 3pm on the day of the shooting, and started by photographing the scene and items of evidence.
She also participates in the execution of search warrants, the court hears, and collected evidence in this way from a props truck and an office in Albuquerque called PDQ Warehouse - a props supply company.
The prop truck search took place on 27 October 2021, six days after the shooting, while the office search took place on 30 November 2021, the court hears.
Ms Poppell is also shown the gun collected from the Rust set. She tells the court she sent it to the FBI for analysis to search for latent (invisible) fingerprints, and a firearms functioning test, to check if it was working properly.
The gun was secure, kept in a vault, until it was sent to the FBI, the court is told. The gun appeared intact when it was sent, Ms Poppell says, but its condition had changed when she received it back.
"The cylinder of the firearm had been removed and placed separately," she says, and an "internal component" had been bagged and placed separately.
Court back in session
The court is now hearing from Detective Joseph Lujan, who also works for Santa Fe County Sheriff's Office and was on duty on 21 October 2021, the day of the Rust shooting.
Other sheriff's office personnel were dispatched to the set, he says, while he was sent to the hospital emergency room.
Detective Lujan says he saw director Joel Souza, the film's director, who was wounded in the shooting. He tells the court he watched medics treat Mr Souza and retrieve a "projectile from his shoulder" - this was then placed into a plastic container which he took possession of.
Defence lawyer Alex Spiro puts it to Detective Lujan that Mr Souza never mentioned Alec Baldwin when describing what had happened.
The detective says this is correct.
We are now moving on to the next witness, Marissa Poppell, the crime scene technician.
Earlier pictures from the courtroom
The break has overrun a little again, but we'll be back with live updates as soon as court is back in session.
Here are some photos taken earlier today, showing Alec Baldwin's family support in court.
Court breaks
Jurors are now being directed to take a break.
Court resumes at 3.15pm in New Mexico, 10.15pm here in the UK.
See you back here soon.