A suicide car bomb attack rattled Iraqi capital city Baghdad on Friday, killing at least 31 people and injuring 60 others, an interior ministry source said.

The interior ministry official, on condition of anonymity, told Xinhua that the attack took place near a funeral site outside a hospital in southern Baghdad's al-Zafraniya district.

Many of the injured are in serious condition, which could make the death toll higher, said the official. Several vehicles and buildings near the site were damaged by the explosion, said the source.

No one has claimed responsibility so far, he said, adding that investigations are underway.

Violence in Iraq has been seeing increase since U.S. forces completed their pullout on Dec. 18, 2011.