An Iraqi cameraman carrying credentials for the United States network CBS is being held on suspicion of rebel activity, the US military in Iraq said.
US troops are engaged in regular clashes with Iraqi insurgents
The cameraman suffered minor injuries during a battle in the northern town of Mosul on Tuesday between US soldiers and suspected insurgents, reports say.
The military said he had been standing near a rebel killed in the shootout.
The cameraman was detained because he may pose a "threat to coalition forces", according to the military.
He "will be processed as any other security detainee", it said in a statement on Friday.
On Tuesday a CBS journalist in Baghdad told AFP news agency that the network's cameraman in Mosul, named as Abdel Amir Younes Hussein, had been wounded.
After the military statement was released on Friday, a CBS spokeswoman said the network was "looking into the situation".