Daily Mail.Sancho arrived in Thailand on July 31 as a tourist, and reportedly arrived, with Arrieta in tow, to attend a party on Koh Pha-ngan, a popular beach destination in the southeastern part of the country best known for its monthly Full Moon Party. The raucous night-long celebration is tied to the lunar calendar and draws international revelers to its outdoor rave event.Police allege that Sancho murdered Arrieta and cut his body into 14 pieces before dumping them in the sea and other places around the island.