ANTIOCH, Calif. (KRON) – Many people came out tonight to honor the life of an Antioch man who died back in December.

Angelo Quinto would have been 31 today. His family says he was murdered by police in December after they called 911 for help.

“Happy birthday son.”

Friends, family, neighbors and city officials celebrating the life of Angelo Quinto on what would have been his 31st birthday.

“I should’ve told him that he’s getting really old without a single doubt in my mind that he would live to see his face wrinkle and his hair turn gray,” sister Bella Collins said.

Quinto’s family and his attorney say he was murdered by Antioch police back in December after they called 911 for help. They say Quinto was in the middle of a mental health crisis.

They say officers put their knees on his neck.