The parents of a wanted probationer who was fatally shot by police last year at a southeast Fresno elementary school are suing the city and law officers for wrongful death.

Jaime and Mirella Reyes, parents of Jaime Reyes Jr., filed the lawsuit Thursday in U.S. District Court in Fresno. They claim police used unjustified deadly force against their son.

Last June 6, Reyes was shot and killed by police as he fled with a gun across Aynesworth Elementary School after a chase through the neighborhood near Church and Chestnut avenues.

Fresno Police Chief Jerry Dyer said at the time that Reyes was carrying an unloaded .45-caliber semi-automatic handgun when he was shot on the campus while running away from officers. An after-school program was placed on lockdown during the chase. No students or staff were hurt in the shooting.

Reyes was believed to be a Bulldog gang member with a prison record carrying a handgun and police considered him a dangerous suspect, Dyer said.

The family's lawsuit said they believe officers used excessive force against Reyes, stating their son "did not pose a significant and immediate threat of death or serious physical injury to police or anyone else."

According to the lawsuit, officers fired two sets of shots at Reyes Jr. The first set wounded him and sent him face-down to the ground; the second round of shots was fired while he laid motionless and already wounded.

Reyes Jr. died later at Community Regional Medical Center.

Dyer did not return phone calls seeking comment on Thursday.