NEW : Motorcycle bomb kills six in Sunni area of Baghdad . Bomb near Shiite mosque kills at least 30 in Baghdad . The first four attacks , which together killed 36 and wounded 124 , targeted Shiites ; the fifth attack was against a Sunni target . Three attacks on Shiite pilgrims traveling through Iraqi capital . Friday was end of Shiite celebration of historic Muhammad 's birthday .
NEW : Motorcycle bomb kills six in Sunni area of Baghdad . Bomb near Shiite mosque kills at least 30 in Baghdad . Three attacks on Shiite pilgrims traveling through Iraqi capital . Friday was end of Shiite celebration of historic Muhammad 's birthday .