The pilot attempted a night landing on a taxiway in front of the control tower, which was closed at the time. The airplane overran the end of the taxiway, rolled down an embankment and struck trees. The pilot, whose identity was not confirmed, was believed to have incurred minor injuries. He subsequently paid a passerby to take him to a local hotel, and after a night's rest, he left the area. Ownership of the airplane could not be determined due to a recent sale. Approximately 250 kilograms of cocaine were found onboard the airplane. Further investigation was being conducted by federal authorities and local law enforcement.