GILLIAN FLACCUS, Associated Press

TUSTIN, Calif. (AP) — Authorities say a shooting spree through Orange County, Calif., has left four people dead, including the shooter, and several others injured.

Orange County sheriff's spokesman Jim Amormino said Tuesday the shootings began at 4:45 a.m. when deputies responding to a call found a female shot multiple times in a house in Ladera Ranch.

Three more people were fatally shot in the next 25 minutes after carjackings in Tustin and Santa Ana.

Read an update here.

Amormino says the suspect shot himself at an intersection in Tustin.

The motive for the shootings is still unclear and it's also unclear if the victims knew each other or the shooter.

Copyright 2013 The Associated Press.