Baghdad (CNN) -- A suicide car bomber detonated at the main entrance of the police academy in eastern Baghdad on Sunday, killing at least 15 people, Iraqi police officials said.
The attack, which occurred at the traditional start of the work week in the Arab world, wounded at least 21, two police officials said.
The officials spoke on condition of anonymity because they were not authorized to release details to the media.
Officials had first said the suicide bomber detonated an explosives vest, then later said it was a suicide car bombing.
Baghdad police academy is the only one in the capital and is within the compound of the heavily -guarded interior ministry, but has a separate entrance.
The attack comes as the country is mired in a political crisis split along sectarian lines, which has raised fears about a return to the levels of violence that nearly tore the country apart in 2005 and 2006.
The bloodshed has generated uncertainty about the ability of Iraqi security forces to ensure order, particularly after the United States withdrew troops at the end of 2011, as well as fear about the future.