Former Trinamool Congress leaders Rajib Banerjee, Baishali Dalmiya, Prabir Ghoshal and Rathin Chakraborti met Union Home Minister Amit Shah at his residence.
They joined BJP in Delhi on January 30.
BJP National General Secretary Kailash Vijayvargiya was also present during the meeting.
Ahead of the Assembly elections in West Bengal, several TMC leaders have joined BJP.
