The bomb went off near the Education Ministry in the central part of Iraq's capital, IraqiNews.com reported.
Other information about the blast wasn't reported.
At least 35 people were killed and more than 100 people were wounded in violence reported across Iraq Tuesday, officials at the Interior Ministry told CNN.
Officials said 29 of the victims were killed and 107 people were wounded in 11 car bomb explosions throughout Baghdad. The dead and injured were mainly civilians.
In Fallujah, about 30 miles west of Baghdad, five people were killed and 12 others were wounded when gunmen attacked a police station.
In Mosul, about 249 miles north of Baghdad, army Gen. Mohammed Khamas died when a car bomb struck his convoy, security officials said. Khamas was the deputy chief of the of army intelligence department in Mosul.
The United Nations said more than 800 Iraqis have been killed and 2,030 were wounded in August.