Colombian security forces say they have killed at least 22 Farc rebels in fighting near the Ecuadorean border.
Police commandos were dropped by helicopter after Air Force planes bombed a rebel camp in the jungle.
The fighting in the Putumayo region happened near the town of San Miguel, where eight policemen died in a rebel ambush earlier this month.
President Juan Manuel Santos said it was "the biggest blow in recent times" to the left-wing rebel group.
BBC News
