Twelve people, including 11 kindergartners, were killed Tuesday when a school bus crashed and then burst into flames as it traveled through a tunnel in Weihai, Shandong province.

All the children were students at an international school in Weihai in Northeast China, local authorities said.

According to the city's publicity department, 13 people were on the bus at the time of the accident, about 9 am, inside Taojiakuang tunnel in Huancui district of Weihai.