Police responded to a report of shots fired in the 2300 block of Banyan Way at about 10:40 p.m., police said.
Officers found a 43-year-old man suffering from multiple gunshot wounds in front of his home, according to police.
The man succumbed to his injuries, police said. No arrests were made.
Anyone with information on the incident is asked to call Antioch police at (925) 779-6932 or text a tip to 274637 using the key word ANTIOCH.