Police and rescue teams from India and Bhutan are searching their mountainous border for a helicopter that vanished while transporting the chief minister of the northeast Indian state of Arunachal Pradesh. The single-engine helicopter was carrying Chief Minister Dorjee Khandu and four others when it disappeared 20 minutes after taking off Saturday from the Himalayan Buddhist retreat of Tawang for the state capital, Itanagar. Lawmaker Takam Sanjay says bad weather is preventing Indian Air Force helicopters from joining Sunday's search, according to a report of the Associated Press.