As Somali pirates brazenly maintain their standoff with American warships off the coast of Africa, the cargo aboard one Iranian ship they commandeered is raising concerns that it may contain materials that can be used for chemical or biological weapons.

The massive shipping company that controls the vessel, the Islamic Republic of Iran Shipping Line (IRISL), was recently designated by the U.S. Department of the Treasury over nuclear proliferation concerns. IRISL, which is accused of falsifying documents to facilitate the shipment of weapons and chemicals for use in Iran's missile program, is blocked from moving money through U.S. banks as well as from carrying food and medical supplies as part of U.S. trade sanctions against Iran.

They ransacked the ship and searched the containers. But in the days following the hijacking, a number of them fell ill and died, suffering skin burns and hair loss, according to reports.

The pirates were sickened because of their contact with the seized cargo, according to Hassan Osman, the Somali minister of Minerals and Oil, who met with the pirates to facilitate negotiations.

"That ship is unusual," Osman told the Long War Journal, an online news source that covers the War on Terror. "It is not carrying a normal shipment."

The ship's contents are still unclear, but the reported deaths and skin abrasions have raised concerns that it could be more than meets the eye.
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Chemical experts say the reports sound inconsistent with chemical poisoning, but may reflect the effects of exposure to radiation.

"It's baffling," said Jonathan Tucker, a senior fellow at the James Martin Center for Nonproliferation Studies. "I'm not aware of any chemical agent that produces loss of hair within a few days. That's more suggestive of high levels of radioactive waste."

Tucker, a chemical and biological weapons expert, said that Chinese companies have been implicated in selling Iran so-called dual-use chemicals, legal ingredients that can be processed into chemical weapons.

"IRISL's actions are part of a broader pattern of deception and fabrication that Iran uses to advance its nuclear and missile programs," said Stuart Levey, Undersecretary of the Treasury for Terrorism and Financial Intelligence.

The U.S. government has made no accusation against IRISL regarding the Iran Denayat; the State Department would not comment on reports of its suspicious cargo.

"I don't have any information on that case," said State Department spokesman Curtis Cooper. "We're aware that there are currently 12 other hijacked ships off the Somali coast. This is obviously something that is disturbing."