Bomb attacks across Iraq have killed at least seven people, one day after the deadliest wave of violence to hit the country this year.

A pair of car bombs exploded Thursday in Dujail, about 60 kilometers north of Baghdad, killing seven and wounding at least 32 others.

Another car bomb caused casualties in the southern city of Karbala. The victims included Shi'ite pilgrims.

There was no immediate claim of responsibility for the bombings.

At least 29 people died Wednesday in attacks targeting Baghdad and areas of northern Iraq.

This violence comes amid heightened ethnic and sectarian tensions in the country.