District Attorney Steve Wagstaffe said his office and East Palo Alto police are continuing to review evidence gathered in the wake of the shooting, which killed 3-month-old son Izack Jesus Jimenez Garcia, of Redwood City, and wounded his parents, Ivonne Garcia Lopez and Oscar Jimenez.
The teenager was taken into custody Sunday afternoon on weapons charges and was later arrested in connection with the shooting after he implicated himself during questioning, acting police Capt. Jeff Liu said at a news conference on Tuesday.
Liu said the teen and another gunman likely shot the family after mistaking them for the perpetrators of a gang-related assault in Redwood City on May 31.
A second suspect, a 16-year-old East Palo Alto boy, remains in custody on weapons charges and is considered a person of interest in the case, East Palo Alto police spokeswoman Veronica Barries said.
