NEW : The dead include a year - old boy . There has been longstanding sectarian tension among Kurdish , Arab and Turkmen people in Kirkuk . Two bombings within two hours in Baghdad wound several , police say . A police officer in ethnically tense Kirkuk is killed Tuesday . Three people are killed in southwestern Baghdad Tuesday .
NEW : The dead include a year - old boy . Two bombings within two hours in Baghdad wound several , police say . A police officer in ethnically tense Kirkuk is killed Tuesday . Three people are killed in southwestern Baghdad Tuesday .