At least six people died when a passenger boat sank on a reservoir in north-western Colombia, officials say, according to BBC. 

They say that 133 people were rescued, but 16 are still missing after the four-deck Almirante went down near the popular resort town of Guatapé.

There were about 170 people on board. Witness Juan Quiroz told the BBC the boat sank in less than five minutes.

Leisure boats quickly came to the rescue, hauling victims from the water and the top deck of the vessel.

Some survivors complained that they had not been given life jackets.

Army helicopters and divers later joined the search-and-rescue operation.