A crew member was killed Thursday during testing on a stunt for the TV series “Titans.” Deadline reports that production of the DC Universe series was shut down following the death of special effects coordinator Warren Appleby at a test facility in Toronto.

The show’s executive producers, Warner Bros. Television Group and the DC Universe streaming service said in a statement that Appleby died “after an accident which occurred at a special effects facility during the preparation and testing for an upcoming shoot.”

The statement adds: “We are heartbroken and devastated by the passing of our treasured colleague, special effects coordinator Warren Appleby. … Warren is beloved by all who worked with him during an impressive 25-year career in television and motion pictures. The executive producers, along with everyone in the ‘Titans’ family, Warner Bros. Television Group and DC Universe, wish to express our deepest condolences, and heartfelt love and support, to Warren’s family and friends at this most difficult time.”

The series, which premiered in 2018, stars Brenton Thwaites as Dick Grayson and Anna Diop as Starfire.

TMZ reports that the Ministry of Labour is investigating the incident and the production will be shut down for two days.

“The stunt in question at the test facility was a car that was supposed to flip on its side. The car did indeed flip, but a piece of metal from some sort of welded contraption that was attached to the car flew off,” TMZ reports. “That object struck the special effects coordinator — who was standing nearby — in the head. EMTs put the man on a stretcher and took him to the hospital, but cops tell us he died en route.”