Mike Sebastian Cortez-Marquez, 19

Mike Sebastian Cortez-Marquez, a 19-year-old Latino, was shot and killed Thursday, June 16, at Inglewood and Marine avenues in Redondo Beach, near its boundary with Lawndale, according to Los Angeles County coroner’s records. 

Cortez-Marquez and a friend drove to a gas station at the southwest corner of the intersection about 4 p.m. and while there got into an argument with Erik Martinez, a 19-year-old Latino, said Redondo Beach Police Sgt. Michael Martinez. 

Erik Martinez walked away to the street, and Cortez-Marquez’s friend ran after him into the crosswalk, where the two began fighting, Michael Martinez said. 

Cortez-Marquez “went to help his friend,” the police sergeant said, “and the suspect pulled a gun out of his waistband and shot at both of them, right in the crosswalk.”

The friend was taken to a hospital, where he is expected to recover, Michael Martinez said. Cortez-Marquez was pronounced dead at the scene at 4:07 p.m. with multiple gunshot wounds, according to coroner's records.   

Investigators believe the gunman and the two who were shot were involved with rival Lawndale gangs, Michael Martinez said. 

No weapons were found on Cortez-Marquez or his friend, a 19-year-old Latino, Michael Martinez said. 

A fundraising account has been started to help Cortez-Marquez’s family pay for his burial expenses. 

Erik Martinez was arrested in Long Beach the following day. He was charged June 21 with murder and attempted murder, with allegations that he used a handgun and that the crime was committed in association with a criminal street gang, said Ricardo Santiago, spokesman for the Los Angeles County district attorney's office. He is scheduled to be arraigned July 6 in Department 4 of the Los Angeles County Superior Court's Torrance Courthouse, and is being held in lieu of $3.04 million bail. 

A gun not registered to Erik Martinez was found when he was arrested, Michael Martinez said. Investigators are trying to determine whether the gun was used in the homicide and how it came to be in Erik Martinez's possession.

Anyone with information is asked to call Redondo Beach police at 310-937-6685. Those wishing to remain anonymous can call Crime Stoppers at (800) 222-8477.  

Contact the Homicide Report. Follow @latimeshomicide on Twitter.