Santanu Bhowmick, a journalist from 'Dinrat' news channel, was covering the agitation and road blockade by the IPFT at Mandai when he was hit from behind and abducted.
Twenty people have been arrested in connection with the post-poll violence incidents in the state, the police said.
A case has been registered in Tripura against Trinamool Congress national general secretary Abhishek Banerjee, member of Parliament Dola Sen, West Bengal education minister Bratya Basu and other senior leaders of the party for allegedly obstructing police officers from performing their duties.