A small plane carrying 21 people including two foreigners has gone missing in west Nepal, Reuters reported citing an airport official on Wednesday.

The Twin Otter aircraft, operated by Tara Air, was carrying 18 passengers and a crew of three on a flight from Pokhara, 125 km (80 miles) west of Kathmandu, to Jomsom when it lost contact with the control tower.

"Two helicopters are on a search-and-rescue mission," Pokhara airport official Yogendra Kunwar told Reuters. "There is no trace of the aircraft so far."

(With inputs from Reuters)