Honduran security forces on Monday arrested two U.S. pilots who abandoned a luxury jet last week at the Roatan airport on the country's Caribbean coast, police said.

The pilots were apprehended at the airport in San Pedro Sula, in northern Honduras, as they were preparing to board a flight for the United States, the coordinator of the Fusina inter-institutional security force, Quintin Suarez, told reporters.

The abandoned jet had landed at the Roatan airport last Tuesday and the pilots - identified as Luis Felipe Parra and Hector Manuel Guerra - after parking it, simply abandoned it, said Suarez without providing any further details.

Honduran authorities are investigating why the pilots just walked away from the jet and are attempting to find out "if the plane was transporting drugs or another (prohibited) substance," Suarez said.

He added that the plane "will remain in (police) custody" during the investigation.

Honduran territorial waters and airspace, mainly in the Caribbean area, are used by South American drug traffickers as a conduit through which to send narcotics to the United States.

So far this year, Honduran authorities have seized more than 2,000 kilograms of cocaine and dozens of barrels of chemicals to refine that drug, as well as weapons and ammunition of assorted calibers. EFE