Martin Herrera, of Fountain Valley, was critically injured

Martin Herrera, of Fountain Valley, was critically injured when shots rang out shortly after 4 p.m. Friday in the 600 block of N. Bristol Street. Herrera died the next day as a result of his injuries at UCI Medical Center in Orange, said Santa Ana police Cmdr. Tammy Franks.David Frias, 18, of Fountain Valley remains hospitalized in serious but stable condition, Franks said. Gang detectives arrested Hector Martinez, 23, on Sunday in Corona where he lives. Martinez was booked on suspicion of murder and a gang enhancement and is being held at the Orange County Jail in lieu of $1 million bail. Detectives are not releasing details of what led to the shooting pending the ongoing investigation.Herrera's killing is the third gang-related killing of the year in the city. Last year, there were 13 gang-related killings.