Three car bombs in a northern Iraqi city killed six people and injured about 35 others today, a police official said.
The blasts struck late in the morning in the oil-rich city of Kirkuk which sits on a fault line of ethnic tensions among Arabs, Kurds and Turkomen.
Police Brigadier-General Sarhat Qadir said the bombs exploded outside a Kurdish police headquarters, a highway and a pharmacy in southern Kirkuk, 180 miles (290km) north of Baghdad.
Earlier, two minor bombings which appeared to target police wounded six people in the Iraqi capital.
The first blast injured four outside the al-Ansar mosque in the Shiite neighbourhood of Sadr City as a police patrol passed by. A few minutes later, the second bomb exploded on the nearby Mohammed al-Qasim highway. Officials said two policemen who were on patrol were hurt.
Violence across Iraq has dropped dramatically from just a few years ago, but bombings and shootings still occur almost every day.