Celerations were organised at Jorabagan area of Kolkata with sweets being distributed to passerby.
A public broadcasting of Modi's swearing in ceremony over giant screen even as 'ladoos' were served to all who passed by at Sarbakhan Road of Kolkata.
At various BJP districts offices too, giant screens were put up as crowds cheered as Modi took the oath.
Hundreds of BJP workers from across the state gathered at BJP party office and cheered as Modi took over as the 15th Prime Minister of India.
Not only did it bag the two prestigious seats of Darjeeling and Asansol, it also emerged second in three other seats of Kolkata South, Kolkata North and Maldaha South.