The BJP projected the decision of TMC's Muslim MLA to join the party as a vindication of Prime Minister Narendra Modi's slogan of "Sabka Saath, Sabka Vikas, Sabka Vishwash" (together with all, development for all, trust of all).
Islam, who represents Lubpur assembly constituency, joined the BJP in the presence of BJP leaders Mukul Roy and Kailash Vijaywargiya. Along with Islam, TMC's youth wing president Gadadhar Hazra also joined the saffron party.
Two TMC legislators and over 50 councillors had joined the BJP on Tuesday.
Meanwhile, BJP sources have claimed that six legislators of the TMC are likely to switch sides in a few days along with a few former MPs of the party. "Six TMC MLAs are likely to join us soon. Many more councillors of various municipalities are also in line. Just wait and watch," a senior BJP leader told PTI on condition of anonymity.
The leader said not just MLAs, a few former MPs of Trinamool Congress, are also in touch with the party and have expressed their desire to join BJP in its "fight against misrule of the TMC".
Of the six MLAs, four are from south Bengal and two from north Bengal, he said.
Three MLAs, including BJP leader Mukul Roy's son Subhrangshu Roy, and over 50 councillors, most of them from the Trinamool Congress, joined the saffron party on Tuesday as it works to consolidate its position in the state following impressive show in the Lok Sabha polls.
In a stunning performance, the BJP won 18 Lok Sabha seats in the state, only four less than TMC's 22.
The MLAs who joined the BJP at a press conference on Tuesday are Congress's Tusharkanti Bhattacharya and CPI(M)'s Debendra Nath Roy, besides Roy who was suspended from the TMC for "anti-party" activities after the election results were announced.
The Trinamool Congress, however, tried to downplay the development.
"One suspended MLA of Trinamool joined BJP yesterday. The others were from Congress and CPI(M). The number of councillors is 6. That too they were forced at gunpoint to do so," the TMC said in a tweet.
The Trinamool Congress leadership Tuesday had accused the BJP of indulging in horse-trading, an allegation denied by the BJP.
"The allegation is completely baseless. If someone wants to join BJP and fight against TMC's misrule, how can we stop it. And TMC leaders should be the last person to talk about horse trading, when TMC poached on Congress and CPI(M) MLAs in last few years, what was that? Is it not horse trading?" BJP leader Mukul Roy said.
(With inputs from PTI)