NEW : Local Afghan helped British locate abducted journalist , official says . CNN reporter Stephen Farrell freed in commando raid . Afghans journalist killed in raid , Afghans Prime Minister Stephen Farrell says . British commando also killed during raid ; woman , child die in crossfire .
NEW : Local Afghans helped British locate abducted journalist , official says . New York Times reporter Stephen Farrell freed in commando raid . Afghan journalist killed in raid , British Prime Minister Gordon Brown says . British commando also killed during raid ; woman , child die in crossfire .