Bogota - Grainy shots of Colombian soldiers and policemen behind barbed wire in rebel "concentration camps" have increased pressure on President Andres Pastrana to allow a prisoner exchange with guerrillas, writes Martin Hodgson.
The film, which has been broadcast on television news programmes, shows five compounds deep in rebel-held jungle, where guerrillas of the Revolutionary Armed Forces of Colombia (FARC) are holding some 450 servicemen.
The pictures were obtained when rebel leaders allowed two women to visit their imprisoned relatives.