Five Iraqi security force members have been killed in a pair of apparently coordinated bombings in Baghdad.

Military officials say a roadside bomb exploded in the northern Adhamiya district of the capital on Sunday and then a second blast hit after security forces rushed to the scene.

Officials say the blasts killed two army officers and three soldiers, while about 10 other people were wounded.

The violence comes at a time when some U.S. and Iraqi officials have expressed concern about the country's ability to handle security after U.S. forces withdraw at the end of the year.

However, the French news agency quotes an Iraqi vice president,Tareq al-Hashemi, as saying the U.S. troop pull-out will improve security. He said on Sunday that an extended American military presence would be “a problem, not a solution.”

Iraqi officials said early this month that they would start talks with the United States about maintaining a training mission in the country after the December pull-out.

On Tuesday, a radical Iraqi Shi'ite cleric warned against any U.S. extension. Moqtada al-Sadr said U.S. forces will face resistance if they stay beyond the deadline.