Nepali security forces are trying to rescue six Indian tourists who have been stranded by heavy snowfall in the Himalayas near Nepal's deepest lake since Saturday afternoon.

The group, four men and two women, is stuck at Danigad in Shey-Phoksundo National Park, in Dolpa district in the remote north-west of Nepal, according to the district administration.

The Shey Phoksundo lake in the rural municipality of the same name is Nepal's deepest lake at an altitude of 3,600metres (11,800ft) and with the estimated depth of 145m (475ft).

"We have located the area where they are stranded, and an army helicopter is arriving to rescue them," the district's chief officer, Junu Dhakal, told PTI.

"We hope to rescue them soon." She said the group could not be called missing because officials had found the area.

Mobile phones do not work where the tourists are, Ms Dhakal said, but they are in touch with Nepal Army personnel who are posted in the national park.…