A gunman shot his ex-girlfriend and an employee at a Seattle bar before being killed by police Sunday night, authorities said.

The shooter walked into The Twilight Exit about 10:15 p.m. local time (1:15 a.m ET Monday) and opened fire, first wounding his 25-year-old ex-girlfriend then a 30-year-old bar worker who tried to intervene, Seattle police said in a statement.

Police said the suspect later raised his gun and fired at them. One officer returned fire, killing the man.

The victims were taken to a hospital and their injuries were not thought to be life-threatening, police said. The gunman was pronounced dead at the scene.

Police said there were  "a number of witnesses" inside the bar when the shooting occurred.

The Twilight Exit's Facebook page has more than 2,800 "likes" and customers were already posting messages of concern early Monday.