Police search for motive in So Cal shooting spree

There's still no motive on a bizarre shooting in Southern California.
The shooting left four people dead including the gunman and spanned much of Orange County.
Investigators say a 20 year old Ali Sayed's rampage started when he shot and killed a woman in his home. He then carjacked three cars, killing two people. He then lead police on a chase before stopping, pulling out a shotgun and killing himself.