A spate of car bombings rocked Iraq on Tuesday, on the the ninth anniversary of the U.S. invasion of Iraq.

The violence left at least 10 dead and 59 injured in Baghdad, Hilla and Kirkuk.

No one immediately claimed responsibility for the attacks.

In central Baghdad, a suicide car explosion killed at least two people, police said.

In Kirkuk, a multi-ethnic city about 300 kilometers (186 miles) north of Baghdad, three separate car bombings killed eight people.

And in Hilla, about 100 kilometers (62 miles) south of Baghdad, another car explosion injured seven people.

Iraqi officials have expressed concern that the continuing violence could cast a shadow as Iraq prepares to host the next Arab summit on March 29.

The government said last month that logistical and security arrangements had been agreed upon for the event.

The attacks on Tuesday come nine years to the day that a U.S.-led army invaded Iraq on March 20, 2003, toppling longtime dictator Saddam Hussein.