Thai police have issued arrest warrants for two Americans who tried to mail a preserved baby's head, foot, and other human body parts to the United States. Police say the objects were stolen from a medical museum in Thailand. Police on Tuesday issued the warrants for Ryan McPherson, 31, and Daniel Tanner, 33 on charges of theft, possessing stolen items and falsely declaring the items on shipping documents. McPherson and Tanner are the co-creaters of the "Bumfights" video series from the early 2000s. The series enticied homeless people to fight and perform stunts in exchange for money, booze, and other prizes. Officials want to extradite the pair, who left Thailand on Sunday for Cambodia after police questioned and released them without charges. They told police they had bought the items at a night market. On shipping documents they described the items as toys.