SEATTLE -- A 30-year-old man with a gun who chased a doctor at a lower Queen Anne medical office drove to the West Seattle Bridge and jumped to his death, police said.

Police responded to a report of a man with a gun at the doctor's office on the fifth floor in the 200 block of West Mercer Street at 11:38 a.m.

"He came back into the office jiggled the door. The receptionist said, ‘You can’t go in there.’ He went in there, and he said, 'I'll give you one chance. I'll ask you nicely to give me my money back. And then he pulled a gun," witness Samantha Portteus said.

The man argued with the doctor over a prescription medication and demanded his money back, police said.

“And then all the sudden he said, 'Everybody get down and cover yourself. He has a gun,'" another witness said.

According to police, the man then began chasing the doctor around the office and the three patients in the office scattered.

"I didn’t know where to go. I just didn’t want to follow the guy with the gun," one witness said.

"I pushed the button to the elevator thinking I could escape that way – so he jumped in the elevator and I’m like, I’m going somewhere else, Portteus said.

By the time police arrived, the man had left.

The doctor was not hurt.

Police told reporter Graham Johnson that the man drove to the West Seattle Bridge, where he jumped. He was pronounced dead at the scene.