Jairo Mendoza, 20, was arrested Wednesday evening by gang officers from the Los Angeles Police Department's Olympic Division, the agency said. He was being held in lieu of $2.12-million bail.
According to the LAPD, Mendoza is suspected of being one of several gang members who attacked 27-year-old Bryan Hernandez in the area of 8th Street and Normandie Avenue.
Hernandez was declared brain dead after being hospitalized with severe injuries, his family said.
Anyone with information about the incident is asked to call a tip line that the LAPD has established for the case: (213) 382-9470.