WEST COVINA, Calif. - A homeowner was asking a 911 dispatcher for help when her pleas were interrupted by gunshots, then silence.

When deputies arrived at the home, the woman had been shot to death.

The woman told the dispatcher someone was trying to break into her home in upscale West Covina, Los Angeles County sheriff's Lt. Dan Rosenberg said. "Deputies heard gunshots followed by silence and an open phone line," he said.