Bhutan PM is scheduled to visit the business summit which will be held on January 8 and 9.
Bhutan Prime Minister Tshering Tobgay will arrive in Kolkata tomorrow for a four-day visit to West Bengal where he will be attending Bengal Global Business Summit, officials said.
Chief Minister Mamata Banerjee had visited Bhutan in October last year and had invited the country's prime minister.
Mr Tobgay had developed a good rapport with Ms Banerjee and even drove her once to the hotel in Thimphu.
Among other programmes, he is scheduled to visit the business summit which will be held on January 8 and 9.