Bombings and a drive-by shooting killed six people in an around Iraq's capital on Saturday, officials said.

In the deadliest assault, four bombs exploded near the home of Yassin Essa Dawoud, a local leader in the government-backed Awakening Councils, which turned against Iraq's insurgency. Four people were killed in the attack in the town of Taji, about 20 kilometres north of the capital, police and health officials said.

Dawoud's wife and brother were among the dead. Eleven others were wounded, the officials said.

In a separate attack, a bomb attached to a minibus exploded in the Shiite neighbourhood of Sadr City in eastern Baghdad, killing one civilian and wounding six others.

Elsewhere, gunmen using silencers assassinated a police brigadier general in a drive-by shooting in the Zayouna area of eastern Baghdad, police and health officials said.

All the officials spoke on condition of anonymity because they were not authorized to release the information.

Violence has ebbed across Iraq, but deadly bombings and shootings still occur almost daily as the U.S. moves to withdraw all of its 33,000 troops from Iraq by the end of the year.