The FAA and NTSB are helping the Mexican government in the investigation of a 1975 Gulfstream II (N987SA) that crashed last Monday in a remote jungle area on the Yucatan Peninsula near Cancun with nearly four tons of cocaine on board. Interestingly, the twinjet changed hands at least twice in the past month, and was purchased one week before the accident by a Florida pilot with a history of legal and financial problems. The GII was last seen leaving from a Fort Lauderdale, Fla. airport on September 18, after which it apparently flew to Mexico, then to Colombia and was on its way back to Mexico when it was intercepted by anti-drug aircraft. It’s unknown if the GII was shot down by the intercepting aircraft or crashed while trying to evade authorities. According to newspaper reports, three suspects, including a Mexican pilot, are in custody. Earlier incorrect reports said the airplane was used to transport terrorist suspects to the U.S. detention center in Guantanamo Bay, Cuba.