Oklahoma state police are investigating after a sheriff's deputy killed a 67-year-old man who shot a local police chief.

The Oklahoma State Bureau of Investigation says authorities arrived Sunday to a house in Pond Creek where homeowners reported a man who was trying to get inside their home.

Officers from three agencies arrived and began speaking with Clifford Butler Jr. The state bureau says that as officers tried to subdue Butler, he pulled a gun and shot the Pond Creek police chief.

A Grant County sheriff's deputy returned fire, killing Butler.

The deputy's name wasn't released. It's unclear what condition the police chief was in.

A hospital spokeswoman referred questions about medical conditions to the sheriff's office, which didn't immediately return a phone message seeking more details on the shooting.