HANGZHOU, July 7 (Xinhua) -- A preliminary report said two students from east China's Zhejiang Province died in a plane crash in San Francisco on Saturday.

Based on information obtained from their boarding passes, two female middle school students from Jiangshan City, Zhejiang Province, died in the accident, a reply from Asiana Airlines' head office in China to the Jiangshan municipal government said.

But the identities of the dead have not been confirmed by DNA tests yet, according to the reply.

The municipal government said the two students were believed to be travelling with a group of middle school students and teachers from Jiangshan on Asiana Airlines Flight 214 to take part in a summer camp in the United States.

Some 30 students and five teachers had planned to travel with the group, but one teacher missed the flight to Seoul and later, the flight from Seoul to San Francisco, according to the municipal government.

According to sources with Shanghai Pudong International Airport's border inspection station and Asiana Airlines, more than 90 passengers departed Shanghai on Asiana Airlines Flight OZ362 to Seoul, and then transferred to Flight 214 to San Francisco on Saturday.

Information on the nationalities of the 90-plus passengers has not been released.

Asiana Airlines Flight 214 from Seoul crashed while landing at San Francisco International Airport.