Retired government employee Tapan Putatunda and his software engineer son Samrat, who were arrested on August 16 allegedly without a proper probe after a promoter complained they were Maoists, were denied bail by the Alipore district judges court on Friday.
The Putatundas had filed the petition after the additional chief judicial magistrates court in Alipore turned down their bail plea on August 23 and remanded them in judicial custody till September 3.
Submitting the petition for the father and son, their counsel, former law minister Nisith Adhikary, told the court that a threat letter allegedly sent by his clients to the promoter, was fabricated.
Police are yet to come up with reports by handwriting experts that can establish the letter was written by one of the accused, said Adhikary.
Defence counsel submitted documents to prove that the posters put up in the Behala neighbourhood of the accused were also fabricated.
The posters were issued in the name of the local citizens committee. The panel, however, has made a written declaration that it was not aware of the posters.
The public prosecutor opposed the bail petition saying that the investigation was at an early stage and the accused might tamper with evidence if they were released on bail.