The Colombian authorities have seized cocaine valued at more than $300m (£162m) in what they say is the single largest drugs haul ever. They found the cocaine, weighing at least 12 tonnes, on a jungle riverbank near the south-west Colombian coast, BBC reported today. Five people have been arrested and a number of weapons and speedboats have been seized. The cocaine is thought to belong to the main right-wing paramilitary group, the AUC, which is engaged in peace talks. Colombian police estimate that paramilitary groups control as much as 40% of the country's illegal drugs trade.