The latest on a videotape showing a San Diego police officer shooting an unarmed suspect (all time local):

2 p.m.

The San Diego County district attorney has released video of a police officer fatally shooting an unarmed man with a history of mental illness.

Surveillance footage shows San Diego police Officer Neal Browder exiting his patrol car and quickly firing once to the chest of Fridoon Rawshan Nehad as the Afghan immigrant walked toward him at a distance of 17 feet.

District Attorney Bonnie Dumanis defended her decision not to prosecute the officer in the April 30 shooting, saying initial reports by witnesses indicated the 42-year-old Nehad had a knife.

The video shows Nehad from behind, making it impossible to see what the officer saw. The officer was wearing a body camera but it wasn't recording during the episode.

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10:40 a.m.

The San Diego County district attorney has called a news conference at 11 a.m. to discuss release of a surveillance video of a San Diego police officer fatally shooting an unarmed man with a history of mental illness.

Last week, a federal judge cleared the way for the family of Fridoon Rawshan Nehad (ne-HOD') to release the video, which they obtained in a wrongful-death lawsuit.

The judge put the order on hold until Wednesday to give the city and the police officer time to appeal.

Several news organizations sought to have the video released despite objections from the city and the officer.

After reviewing the video, District Attorney Bonnie Dumanis declined last month to prosecute Officer Neal Browder, who was responding on April 30 to a 911 call of a knife-wielding man.