A bus accident in southern Ecuador has killed at least 10 people, including three children, according to rescue workers. The vehicle was on its way to Loja when it crashed and overturned 21km south of the city of Cuenca around 04:30 local time (09:30 GMT) on Saturday. Firefighters worked for more than two hours to recover bodies from the bus and tend to the wounded, Cuenca's voluntary fire department said in a statement on Twitter. "Our personnel recovered 10 bodies (seven adults and three children) and moved five of the 16 injured in the bus accident," the statement read. The cause of the crash was not immediately clear.