Iraq is searching for “highly dangerous” radioactive material stolen in 2015, according to an environment ministry document and seven security, environmental and provincial officials who fear it could be used as a weapon if acquired by Islamic State.

The material, stored in a protective case the size of a laptop computer, went missing in November 2015 from a storage facility near the southern city of Basra belonging to U.S. oilfield services company Weatherford WFT.N, the document seen by Reuters showed and officials confirmed…

The material, which uses gamma rays to test flaws in materials used for oil and gas pipelines in a process called industrial gamma radiography, is owned by Istanbul-based SGS Turkey, according to the document and officials.  A U.S. official said separately that Iraq had reported a missing specialized camera containing highly radioactive Iridium-192 to the International Atomic Energy Agency (IAEA), the Vienna-based U.N. nuclear watchdog, in November 2015….The environment ministry document, dated Nov. 30 and addressed to the ministry’s Centre for Prevention of Radiation, describes “the theft of a highly dangerous radioactive source of Ir-192 with highly radioactive activity belonging to SGS from a depot belonging to Weatherford in the Rafidhia area of Basra province”…

A senior environment ministry official based in Basra, who declined to be named as he is not authorised to speak publicly, told Reuters the device contained up to 10 grams (0.35 ounces) of Ir-192 “capsules”, a radioactive isotope of iridium also used to treat cancer.

The material is classed as a Category 2 radioactive source by the IAEA, meaning that if not managed properly it could cause permanent injury to a person in close proximity to it for minutes or hours, and could be fatal to someone exposed for a period of hours to days….

Large quantities of Ir-192 have gone missing before in the United States, Britain and other countries, stoking fears among security officials that it could be used to make a dirty bomb…..“They could simply attach it to explosives to make a dirty bomb,” said the official, who works at the interior ministry…But the official said the initial inquiry suggested the perpetrators had specific knowledge of the material and the facility. “No broken locks, no smashed doors and no evidence of forced entry,” he said….

Besides the risk of a dirty bomb, the radioactive material could cause harm simply by being left exposed in a public place for several days, said David Albright, a physicist and president of the Washington-based Institute for Science and International Security…The senior environmental official said authorities were worried that whoever stole the material would mishandle it, leading to radioactive pollution of “catastrophic proportions”.

Excerpts from Exclusive: Radioactive material stolen in Iraq raises security fears, Reuters, Feb. 17, 2016