Deadly explosions have rocked the Iraqi capital, Baghdad.

Iraqi officials say at least 17 people were killed early Sunday in an explosion near a police academy and the Oil Ministry in northeast Baghdad. Officials say they have not determined if the blast was caused by a bomb or rocket attack.

Later, a suicide car bomber killed a U.S. soldier in an attack near the Iraqi Culture Ministry in central Baghdad.

Meanwhile, Iraqi government and tribal leaders from Fallujah reported progress in talks aimed at bringing the rebel-held city under state control. Iraqi government officials said the two sides were close to a deal, but details were not available. Insurgents have said they oppose allowing any American forces into the city.