The U.S. military in Iraq has imprisoned an Associated Press photographer for five months, accusing him of being a security threat but never filing charges or permitting a public hearing.

Military officials said Bilal Hussein, an Iraqi citizen, was being held for “imperative reasons of security” under United Nations resolutions. AP executives said the news cooperative’s review of Hussein’s work did not find anything to indicate inappropriate contact with insurgents, and any evidence against him should be brought to the Iraqi criminal justice system.

Hussein, 35, is a native of Fallujah who began work for the AP in September 2004. He photographed events in Fallujah and Ramadi until he was detained on April 12 of this year.

“We want the rule of law to prevail. He either needs to be charged or released. Indefinite detention is not acceptable,” said Tom Curley, AP’s president and chief executive officer. “We’ve come to the conclusion that this is unacceptable under Iraqi law, or Geneva Conventions, or any military procedure.”