Gangtok, May 31 -- The Sikkim government on Saturday imposed a ban on tourist vehicles from plying to entire north Sikkim owing to blockage of roads following a series of landslides triggered by heavy rains, which has also caused swelling of the Teesta and impacted the rescue operation to trace the missing people after their vehicle rolled down into the river on Thursday night.

"I am directed to inform all tour operators that permits for north Sikkim will not be issued on Saturday due to incessant rains on Friday night, which has blocked a road leading to Chungthang," read a government notice on Saturday.

"Advance permits issued for north Sikkim for May 31 may be treated as cancelled, " the notice said.

The main artery leading to south S...