In Bolivia, at least 15 people have been killed and 33 others injured in two seperate accidents. In the first incident, a passenger bus traveling from the southern Potosi city to the capital of Cochabamba department fell into a cliff on Thursday killing 12 of the 50 people aboard the bus and injuring 30. In the second accident the same day, another passenger bus fell into a cliff in Yungas zone of La Paz, west of Bolivia killing three and injuring three others. Police reports said overspeeding have caused the accidents.