NEW : The death toll rises to 34 in Iraq explosions . Many blasts appeared to target amusement parks , according to police . Score: 6 Sunni extremist groups are targeting a Shiite minority in the north .
NEW : The death toll rises to 34 in Iraq explosions . Many blasts appeared to target amusement parks , according to police . An explosion in northern Iraq collapses buildings , traps people . Sunni extremist groups are targeting a Shiite minority in the north .