Two U.S. soldiers were killed and five others wounded in Iraq Sunday, according to the Department of Defense.
A brief statement from the USA -led coalition fighting the Islamic State militant group said five other soldiers were injured in the incident.
The troops were taking part in operations against Islamic State (IS, formerly ISIS/ISIL).
"The entire counter-ISIS Coalition sends our deepest condolences to these heroes' families, friends and teammates", said Lt. Gen. Stephen J. Townsend, commander of the Combined Joint Task Force carrying out Operation Inherent Resolve, as the US-led coalition is known.
Flooding possible Saturday into Sunday
The coverage of storms will increase again by Monday afternoon, and this looks to be the trend through most of the week. The heavier and more extensive rain areas will move east tomorrow night with some rain lingering overnight.
The statement did not name the slain soldiers, deferring identification to national authorities. "Two died today in northern Iraq", he tweeted.
A separate statement released by the Islamic State on Sunday, apparently referring to the same incident, said it had carried out a rocket attack on US positions east of the Iraqi city of Tal Afar that the group claimed killed four American soldiers and injured six.
Close to 5,000 USA troops are now aiding in the fight against ISIS.
A US-led coalition is supporting Iraqi forces in operations against the jihadist Islamic State group, notably in the north of the country. As well as the two soldiers killed Sunday, five more Americans have been killed in the fight against IS, including two in the battle of Mosul.