At least eight people have been killed and 45 others wounded in bomb attacks in the capital Baghdad and central Iraq, officials have said.

The blasts on Tuesday raised the death toll from five days of attacks to 115 in the worst spasm of violence the country has suffered since US forces left the cities on June 30, turning over urban security to Iraqi troops.

In the worst attack, eight people were killed and 30 injured in bombings in the eastern Baghdad neighbourhood of Al-Amin, an interior ministry official said.

Two car bombs, one near a cafe and another outside an apartment complex, exploded within five minutes of each other in the mixed Shia-Christian neighbourhood, the official said.

Common attacks

Nine people were also wounded when a car bomb exploded in a market in the Shaab suburb of northeast Baghdad, the official said.

In Baquba, north of the capital, a six-year-old boy was injured when the car he was travelling in was hit by a roadside bomb, a local security official said.

Two soldiers were also wounded by a roadside bomb in the town of Abara outside Baquba, the capital of the province of Diyala, which remains one of the most dangerous areas in the country.

Three traffic police were wounded by a bomb planted on the road to the Jordanian border in Saqlawiya district, west of Baghdad, a local police official said.

Despite an overall drop in violence in Iraq in recent months, attacks on security forces and civilians remain common in Baghdad, Mosul and in the ethnically divided northern oil-rich city of Kirkuk.