Colombia urged to investigate botched army raid that left four civilians dead

March raid in remote Putumayo village was intended to target former Farc dissidents now involved in cocaine trade

Colombian authorities are facing growing calls to investigate a botched army raid in which at least four civilians - including a 16-year old boy, a pregnant woman, and an Indigenous leader - were killed.

The raid took place early on 28 March in a remote village in the conflict-racked southern province of Putumayo. It was intended to target dissident guerrillas from the now-defunct Revolutionary Armed Forces of Colombia (Farc) who are now involved in the cocaine trade.