LOS ANGELES (AP) — The Los Angeles County district attorney's office has concluded that Pasadena police officers responding to a robbery report acted lawfully when they shot to death a suspect who turned out to be unarmed.

Pasadena officers shot 19-year-old Kendrec McDade during a nighttime encounter on March 24 after a man reported being robbed by two men at gunpoint.

A letter Monday from the district attorney's Justice System Integrity Division to Pasadena police Chief Phillip L. Sanchez says an investigation concluded the officers acted in lawful self-defense and in defense of others.

The letter says the man who reported being robbed mentioned a gun eight times during a 911 call and that dispatch advised the officers that both suspects were armed. The letter says the man later admitted he lied.