Los Angeles: Hollywood star Alec Baldwin said his "heart is broken" Friday after he fatally shot a cinematographer with a prop gun in a shocking tragedy on the set of a Western he was filming in New Mexico.
The US actor said he was fully cooperating with a police investigation "to address how this tragedy occurred."
"There are no words to convey my shock and sadness regarding the tragic accident that took the life of Halyna Hutchins, a wife, mother and deeply admired colleague of ours," he tweeted.
He added: "My heart is broken for her husband, their son, and all who knew and loved Halyna."
The rest of the cast and crew of "Rust" - where Baldwin is playing the lead in a 19th century film about an accidental killing - were "devastated" by the incident, they said in a statement to US media, and production has been suspended.
Hutchins and director Joel Souza "were shot when a prop firearm was discharged by Alec Baldwin," the sheriff in Santa Fe said in a statement.
Hutchins, 42, was transported to hospital by helicopter but died of her wounds, while Souza, 48, was taken by ambulance and was receiving treatment.
Souza was later released from hospital, "Rust" actress Frances Fisher tweeted, citing a text from him.
"Mr. Baldwin was interviewed by detectives," Santa Fe sheriff spokesman Juan Rios told AFP.
"He provided statements and answered their questions. He came in voluntarily and he left the building after he finished his interviews. No charges have been filed and no arrests have been made."
Rios told the New York Times that the shooting happened in the middle of a scene that was being rehearsed or filmed.
The Santa Fe New Mexican published pictures of a distraught-looking Baldwin which it said were taken in the parking lot of the sheriff's office after the tragedy.
The paper said its reporter had seen the 63-year-old actor in tears after he had been questioned by investigators.
One photograph shows a man, presumed to be Baldwin, doubled over.
A spokesperson for Baldwin told PEOPLE magazine Thursday that "there was an accident today on the New Mexico set of Rust involving the misfire of a prop gun with blanks."
In a statement to US media, the film's production company said the cast and crew had been "absolutely devastated by today's tragedy, and we send our deepest condolences to Halyna's family and loved ones."
"We have halted production on the film for an undetermined period of time and are fully cooperating with the Santa Fe Police Department's investigation," the statement said.
Shot on set
Los Angeles-based Hutchins was selected as one of American Cinematographer's Rising Stars of 2019, according to her website.
Originally from Ukraine, she grew up on a Soviet military base in the Arctic Circle, the website said.
The Ukraine foreign ministry said its consulate general in San Francisco was working with US authorities and speaking to Hutchins' relatives "to provide the necessary consular and legal assistance."
Tributes to Hutchins poured in on social media.
"My greatest fear is that someone will be fatally hurt on one of my sets," tweeted Guardians of the Galaxy director James Gunn.
"My heart goes out to all of those affected by the tragedy today on Rust, especially Halyna Hutchins & her family."
The shooting took place at the Bonanza Creek Ranch, a production location near Santa Fe which is popular with Hollywood filmmakers.
Movie sets usually have stringent rules over the use of prop weapons, but accidents have happened.
Most famously, Brandon Lee, the son of martial arts legend Bruce Lee, died during filming of "The Crow" after being shot by a gun that was supposed to fire blanks.
Brandon's sister Shannon Lee commented on the shooting on Twitter.
"Our hearts go out to the family of Halyna Hutchins and to Joel Souza and all involved in the incident on 'Rust'," she posted.
"No one should ever be killed by a gun on a film set."
Baldwin co-produced the film and stars as Harland Rust, an outlaw whose grandson is convicted of murder, and who goes on the run with him.
The star posted a photograph earlier Thursday on Instagram showing him apparently on set, dressed in a period costume and with fake blood on his shirt.
"Back to in-person at the office. Blimey... it's exhausting," he captioned the picture, which went online several hours before the incident.
Baldwin, the oldest and most famous of four actor brothers, has been a leading man on television and in films since the 1980s.
He has starred in a number of high-profile movies, including "The Hunt for Red October" and two iterations of the "Mission: Impossible" franchise, and has also voiced animated characters in hits like "The Boss Baby."
He garnered new fans with his long-running portrayal of Donald Trump on "Saturday Night Live," a character that irritated the former president, but won Baldwin a Primetime Emmy.
Baldwin has also made headlines for his marriage - and acrimonious divorce - to Kim Basinger, outspoken political views and hot temper.
He lives near New York with second wife Hilaria. The couple have six children together.