Union Home Minister and BJP leader Amit Shah reached Kolkata at around 1 am on Saturday for his two-day visit to the state.

He was welcomed at Kolkata airport by several BJP leaders including Kailash Vijayvargiya and Dilip Ghosh.

"Reached Kolkata! I bow to this revered land of greats like Gurudev Tagore, Ishwar Chandra Vidyasagar & Syama Prasad Mookerjee," Shah wrote on Twitter.

His visit comes at a time when several MLAs from the ruling Trinamool Congress have resigned from the state Assembly. There are speculations of Suvendu Adhikari joining the BJP. Adhikari, who had earlier resigned as a minister, resigned from the Legislative Assembly and left the ruling Trinamool Congress on Wednesday.

Shah is scheduled to address roadshows and attend public rallies in two western districts of Bengal - Midnapore and Birbhum - during his two-day visit. Dissident Trinamool Congress heavyweight Suvendu Adhikari is also expected to join the BJP during Shah's rally in Midnapore, sources said.

Shah will arrive in Midnapore district on Saturday and he is proposed to visit the Ramkrishna Mission and Siddheshwari Kali temple in the district. In the evening, he will address a political rally. In between, Shah will have lunch at a farmer's residence at Belijuri village in Midnapore.

After his day's programme, the Union minister will return to Kolkata and is likely to have a meeting with his party colleagues at a hotel in Kolkata's Rajarhat.

On Sunday, Shah will be in Bolpur in Birbhum district. He will visit the Visva Bharati University and is slated to have lunch at a Bengali folk singer's house.

A roadshow in Birbhum has also been scheduled for Sunday. The Union Home Minister is expected to interact with the locals and visit farmers' households in the district, party sources said.