Bomber kills 21 Iraqi recruits in suicide attack
The blast came a day after suicide bombers killed 27 people in attacks in two Iraqi cities. Between them, the three bombs have shattered the lull in violence that followed the poll.
The al-Qaida wing in Iraq, led by Jordanian militant Abu Musab al-Zarqawi, claimed responsibility for the latest attack, as it did for Monday's blasts in the cities of Mosul and Baquba.