Rebels freed Marcos Baquero, a local councilman who was snatched 19 months ago. A Red Cross team and a former leftist Colombian senator flew by helicopter into the jungle to bring Baquero back to Villavicencio, 70-km (43.5 miles) southeast of the capital Bogota.
Baquero was expected by his wife and two children at the airport of Villavicencio.
It is also expected during this week that FARC will release in successive operations the following people: Marine Henry López, Councilman Armando Acuña, the senior police officer Guillermo Solórzano, and the army officer Salin Sanmiguel.
The five were kidnapped by FARC in several episodes between 2007 and 2010.