VIDEO: Terrifying assault at museum ends in fatal shooting

BEND, OR (KTRK) -- Oregon officials have released video and the 911 calls of a violent encounter that led to a fatal officer-involved shooting last week.

It happened after a man assaulted a woman at the High Desert Museum on May 31. In the video, the man is seen dragging and cursing at the woman during the encounter. The woman fights to break free as he threatens her life, holding a knife to her throat.

Officials recently released the video, which was taken by a visitor.

The man in the video has been identified as 36-year-old Nicholas Berger, who authorities say just moved to the area. The victim is 39-year-old Amanda Berry.

When Berger was confronted by other visitors, Berry managed to escape.

When the recording stops , police are on scene and a 13-year veteran officer fired at Berger. Authorities say a Taser was fired prior to the gunfire.

It's unclear what led to the shooting, but Berry, according to officials, believe if Berger got out of the building with her, she would be dead.

Police say the suspect and victim didn't know each other.

Watch the video above and hear the stunning 911 calls from the scene.