CIA agents killed or captured in Colombia

Two Central Intelligence Agency operatives have been captured by Marxist guerrillas in Colombia, it appeared yesterday, while another two were dead, perhaps assassinated, after a light aircraft they were travelling in crash-landed.

US reports of this have not mentioned that they are CIA. This is part of the unknown war escalating in northern South America. I have yet to find a count I trust of the number of US mercenaries and government forces already involved.