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A 17-year-old allegedly shot and killed his stepfather during a domestic dispute Thursday night in midtown Tulsa.

The stepfather allegedly was intoxicated and threatening his wife, the teenager's mother, Tulsa Police Sgt. Dave Walker said.

"The 17-year-old stepson armed himself with a shotgun and sat on a couch in the den along with his mother," Walker said in a news release.

Police said the teenager fired one time when the stepfather, identified only as a 40-year-old man, grabbed the teenager's arm. The 40-year-old man was struck once in the chest. Emergency responders pronounced him dead at the scene, Walker said.

The teenager reported the shooting, which occurred in the 1200 block of South Winston Avenue, to police. The teenager called police about 8:50 p.m. Thursday. The teenager and his mother waited for police to arrive.

Detectives questioned the teenager. But they did not arrest him. Walker said the investigation is ongoing.

Police did not identify the alleged shooter or the decedent.

The shooting marked the 72nd homicide in 2017 in Tulsa.