An autopsy is expected to determine what caused a man to die after being pepper-sprayed and shocked with a Taser gun by Los Angeles County Sheriff's deputies. The man "advanced on the deputies in a threatening manner," prompting them to use pepper spray and at least one Taser stun gun on him, Spencer said. After the man was handcuffed, deputies realized he wasn't breathing. They began CPR and paramedics were called but the man was pronounced dead at a hospital.