Iraq is searching for "highly dangerous" radioactive material whose theft last year has raised fears among Iraqi officials that it could be used as a weapon if acquired by Islamic State.
Baghdad reported the stolen material to the International Atomic Energy Agency (IAEA) in November but has not requested assistance to recover it, the U.N. nuclear watchdog said on Wednesday.
The material, stored in a protective case the size of a laptop computer, went missing from a storage facility near the southern city of Basra belonging to U.S. oilfield services company Weatherford, an environment ministry document seen by Reuters showed and security, environmental and provincial officials confirmed.
A spokesman for Iraq's environment ministry said he could not discuss the issue, citing national security concerns.
Weatherford said in a statement that it was not responsible or liable for the theft. "We do not own, operate or control sources or the bunker where the sources are stored," it said.