Three people were killed on the scene and three others wounded at a bar shooting on in Oklahoma City, the capital city of midwestern US state Oklahoma, authorities said.
Police responded to the shooting at the Whiskey Barrel Saloon around 9 p.m. local time (0200 GMT Sunday), according to local media, Xinhua News Agency reported.
The wounded were hospitalised, with one in critical condition and the other two having non-life-threatening injuries, the Oklahoma City Police Department said.
A suspect has been reportedly in custody.
An investigation is underway. No more details are available so far.