In Bolivia, at least six people were killed and 28 others injured when a street vendor's gas canister exploded near the route of the Carnival in the city of Orura. Deputy Commander Freddy Betancurt said the blast took place on a street parallel to where participants were making the folkloric entrance to Orura's Carnival, one of the most important in Bolivia. <br/><br/>Betancurt said police believe yesterday's accident was caused by hot oil weakening the hose to the vendor's gas canister.<br/><br/>Orura's Carnival draws tourists from Bolivia and around the world, and was declared a world heritage site by UNESCO.