Officers in Washington state shot and killed a man they said charged at them with a running chain saw.

A woman called 911 Tuesday morning to report that her 36-year-old son was armed with a chain saw at their home. Pierce County sheriff's spokesman Gary Sanders said the son previously assaulted the woman and her husband.

Sanders said that when deputies arrived, they confronted the man, but he refused to put down the tool. They used a stun gun on him and he fell to the ground, but he got back up and charged at the deputies with the running chain saw.

Deputies opened fire, and the man died at the scene. His name wasn't immediately released.