At least 30 people died and more than 20 were injured when a bus careered off a hillside road and into a ravine in northern Thailand, authorities said Tuesday

At least 30 people died and more than 20 were injured when a bus careered off a hillside road and into a ravine in northern Thailand, authorities said Tuesday, updating the official toll.
  
The accident took place at about 8:40 pm (1340 GMT) on Monday in Tak, which borders Myanmar, as several buses ferried Thai local government workers for a field trip to Laos. "The latest death toll from the accident is 30 -- nine men and 21 women," said Suriya Prasartbandid, the governor of the western province of Tak. Twenty-two others were injured, he told AFP.
  
"The bus was totally destroyed. Its engine fell out and we're waiting for heavy machinery to lift the wreckage," Suriya said. He said there were more than 300 accidents on the same road last year.
  
Thailand's roads are among the world's deadliest and accidents are common, especially on buses travelling late at night. At least 13 schoolchildren died last month when their bus collided with a truck on a trip to the coast south of Bangkok.