MEXICO CITY - Mexican authorities say a bus heading to a beach in western Mexico went off a cliff, killing at least 21 people.
Nayarit state government spokesman Sergio Canedo says another 29 people were injured in the accident Friday in the town of Tequepexpan.
Canedo says the passengers were vacationers from the northern state of Chihuahua who were heading to Guayabitos beach on Nayarit's coast.
Canedo says investigators are still trying to determine what caused the bus to veer off the road.
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