ATLANTA - Bridget Anderson had been planning to go to her boyfriend's place Monday to cook together and celebrate their three-year anniversary. Instead, she got a call that he had been shot dead by police.

A police officer responding to reports of a suspicious person knocking on doors and crawling on the ground naked at an apartment complex just outside Atlanta fatally shot Anthony Hill, 27. Officer Robert Olsen shot Hill twice when the man began running toward him and didn't stop when ordered, DeKalb County Chief of Police Cedric Alexander told reporters Monday.

Hill had served more than four years in the Air Force when he was medically discharged a few years ago, Anderson told the Associated Press on Wednesday. He was being treated by a VA doctor for bipolar disorder but stopped taking the medication a week or two ago because he did not like the side effects, she said.

Anderson said that she didn't notice any changes in her boyfriend after he stopped taking his medication and that she had never known him to behave strangely.

"This is totally out of the blue," she said, referring to the strange behavior police and others described before Hill was shot.

Hill is black and the officer who shot him is white. No weapon was found, and the Georgia Bureau of Investigation is looking into the shooting.

Demonstrators gathered Wednesday night in Decatur to protest Hill's shooting.