BOGOTA, Colombia -- Colombia's president says the four security force members found slain during a military operation were the longest-held captives of the country's main rebel group.
President Juan Manuel Santos says all four were killed execution-style, three with shots to the head and one with two shots to the back.
Santos said the three police officers and a soldier whose bodies were found Saturday morning after combat in the southern state of Caqueta had been held between 12 and 13 years.
He called the killings "a crime against humanity."
