Immigration police are on the lookout for two US nationals who allegedly stole an infant heart and severed head from a Bangkok medical museum after the Thai Embassy requested Cambodia’s help on Saturday.

Major General Uk Heisela, director of Investigation and Legal Proceedings at the General Immigration Department, said yesterday that Cambodian officials are officially looking for Ryan McPherson, 31, and Daniel Tanner, 33.

“We are conducting an investigation to find them now,” he said. The two Americans allegedly stole the baby organs and two strips of human skin from Siriraj Hospital’s medical museum, and tried to ship them to Las Vegas. Both men allegedly entered Cambodia via the Sa Kaeo province border crossing on November 16, Heisela said yesterday.