MOSCOW (Reuters) - Iraq has no confirmation but is checking reports that Jordanian militant Abu Musab al-Zarqawi may have been killed during fighting in northern Iraq, Foreign Minister Hoshiyar Zebari said on Monday.

Zebari said senior militants were present in a house in the city of Mosul when U.S. and Iraqi forces stormed it on Sunday, causing some of those inside to blow themselves up, but it could not yet be determined if Zarqawi was among those killed.

"We don't have confirmation," Zebari told Reuters during a visit to Moscow.

"In my view, I would say there must have been some key leaders of the insurgency, especially the fundamentalists -- al Qaeda type of people -- so I would not be surprised if he could be one of those who blew himself up," he said.

"We know that American and Iraqi forces ... surrounded a house where there was fierce resistance and when the American and Iraqi forces jointly tried to storm the building the occupants blew themselves up, they committed suicide," he said.

"They believe there must have been some key leaders from the terrorists, from the fundamentalists who committed suicide instead of handing themselves up."

Zebari said only DNA tests could confirm if Zarqawi was among those killed, and said checks were being made...