Officials involved in the identification of the victims of last month's plane crash in Nepal predicted that it could take months to complete DNA tests, especially of the 12 foreigners.

The foreigners include four Chinese citizens, seven United Kingdom citizens and a United States citizen.

"We are facing problems due to the lack of proper DNA testing facilities as there are just two DNA testing centers here in Nepal, which failed to identify the bodies properly," said Harihar Wosti, who heads the Department of Forensic Science at the Tribhuvan University Teaching Hospital in Kathmandu.