A U.S. businessman kidnapped last week in southern Honduras was released "safe and sound" Monday by his captors, first responders said.

Peter Jackson was freed before dawn Monday on the highway between the cities of San Marcos de Colon and Choluteca, fire rescue's Ciriaco Diaz told reporters.

At the time of his release, the businessman was in good health, but following his three days in captivity he was admitted to a private clinic in Choluteca for a medical checkup.

Jackson, who owns a hotel in the northern city of San Pedro Sula and shrimp fisheries in Choluteca, was snatched by armed assailants who intercepted his vehicle on a road in the San Bernardo district.

A business associate and Jackson's driver were found tied-up inside the businessman's vehicle about 5 kilometers (3 miles) from the scene of the abduction.

Up to now, Honduran authorities have not reported whether the Jackson family paid a ransom for his release or any other details of the kidnapping. EFE