VALLEJO  (AP) — A Vallejo police spokesman says an officer shot and killed a man who was later found to have a note in his truck apologizing to the police for making them do it.

Lt. Sid DeJesus said the confrontation started in a shopping center parking lot just before 6 p.m. on Saturday when someone called 911 to report an agitated man holding a large knife next to a pickup truck.

DeJesus says the responding officer saw what would turn out to be a fake gun in the man’s waistband and ordered him to drop the knife, but the man refused and instead came closer. The officer then shot him.

DeJesus says the note investigators found in the pickup apologized for the trouble he had caused and to the officers who would be forced to end his life.