MAPLE VALLEY, Wash. (AP) — Washington state authorities say a 74-year-old father was fatally shot by his son after ignoring deputies’ warnings not to engage with him after a disturbance at their home.

King County Sheriff’s deputies responded to a report of a 41-year-old man threatening to hurt people Tuesday.

Sgt. Ryan Abbott says his deputies were called to the home previously for mental health checks on the same man.

Authorities say the son refused to leave the home when deputies arrived.

Deputies say they were deescalating the situation when the man’s father arrived.

Abbott says they couldn’t keep the father outside since no crime occurred. Deputies heard gunfire after the father entered the home.

The son surrendered and was immediately arrested and booked for investigation of murder.