NEW : ` ` I started CPR on my own son , '' the victim 's father says . Resident : Businesses that remain open all night are closed at the first sign of trouble . The three are killed while trying to protect local businesses from looters , police say . British police have not tied their deaths to the murders .
NEW : `` I started CPR on my own son , '' the victim 's father says . Resident : Businesses that remain open all night are closing at the first sign of darkness . The three are killed while trying to protect local businesses from looters , residents say . British police have not tied their deaths to the riots .