Security was tightened across key locations in Kolkata on Saturday ahead of the swearing-in ceremony of the first BJP government in West Bengal, including at the residence of chief minister-designate Suvendu Adhikari, Brigade Parade Grounds and outside former CM Mamata Banerjee's Kalighat residence. Heavy security deployment was seen outside Adhikari's Chinar Park residence here. Security arrangements were also intensified at the RCTC Ground, where Prime Minister Narendra Modi is expected to land before attending the ceremony.