Several bomb blasts across Iraq, including two car bombs and a roadside blast in the northern city of Kirkuk, have killed 12 people and injured 23 others, officials say.Eight people died and as many others were injured Wednesday as a bomb went off in Kirkuk on Wednesday. Two people were killed in a roadside bomb attack on Kirkuk police chief's convoy. Nine people were injured in the attack. A separate bomb attack on a police checkpoint in Tarmiyah, north of the capital Baghdad, left one policeman dead and four others wounded. In the northern city of Mosul, a roadside bomb killed one policeman and injured two others. The United Nations Assistance Mission for Iraq (UNAMI) said on May 2 that April had been the deadliest month in Iraq since 2008 as terrorist acts killed over 700 people and injured more than 1,600 others across the country.