Malaysia, stolen industrial device with radioactive component. Fear of "Dirty Bomb", the terror of all the police

A highly radioactive device used by an energy company has disappeared in Malaysia, causing a nationwide emergency for fear that it may have been stolen by a militant group. According to Malaysia's Straits Times newspaper, a radioactive dispersion device (RDD), used for industrial radiography of oil and gas supplies, went missing during transit on August 10. The device, which weighs about 50 pounds, or 23 kilograms, disappeared from the company truck in the early hours of the morning while being transported by two technicians. They were reportedly transporting the RDD from Kuala Lumpur to Seremban, an industrial city with a population of around 600.000, located 40 miles south of the Malaysian capital.
The technicians told the police that they had placed the RDD on the back of a company truck for routine transportation. Once they arrived in Seremban, they realized that the device had "simply disappeared" from the truck. The Straits Times stated that both men were immediately arrested, but were released, after the authorities ruled that they were not involved in sabotaging or stealing the radioactive device. Monday 20 August, Reuters news agency contacted Mazlan Mansor, chief of police in Selangor, the federal province that includes both Kuala Lumpur and Seremban. They confirmed "yes, there is a relationship and we are investigating". However, according to Reuters, they have not confirmed the missing RDD.
An important question regarding the missing device is the amount of iridium inside it. Iridium is a radioactive substance that is used for non-destructive tests (known as industrial radiography) of oil and gas supplies. Some experts have expressed concern that the radioactive substance within the missing RDD could be combined with conventional explosives and be used as a "dirty bomb" in order to contaminate a highly populated area with radiation. The New Straits Times quoted an anonymous official of the Malaysian Atomic Energy Licensing Council stating that the RDD "can not fall into the wrong hands, as the consequences can be fatal."