Forget drug mules, police in Colombia have arrested a pigeon that was struggling to fly over the walls of Bucaramanga prison with 40g of marijuana and 5g of cocaine paste strapped to its back. Police believe that the weight of these narcotics was what prevented the bird from flying over the prison's walls:

Apparently, pigeons trained to smuggle are not unfamiliar at this jail. Police say they've previously found birds carrying cell phone Sim cards, although this was their first find of an illegal contraband. Full story via The Guardian