ABC has released a preview of the actor’s hourlong interview about the deadly incident.

“The trigger wasn’t pulled.

How many bullets have gone off in movies, nearly all of them without incident?”

An investigation into the incidentis ongoing.

He went through, in detail, what happened on set that day."

“She was someone who was loved by everyone who worked with her and admired,” he says.

“Even now, I find it hard to believe…

It doesn’t seem real to me.”

Watch the preview above.

The full interview airs Thursday at 8 p.m.

ET on ABC and will stream the same evening on Hulu.