Former communication minister Gokul Prasad Baskota has filed a defamation case against Bijaya Prakash Sharma Mishra over a leaked audiotape where he was heard allegedly negotiating for a Rs700 million "commission".

He said he filed the case at Kathmandu District Court demanding justice.

Baskota took to Twitter on Friday saying he was innocent and the accusations against him were false.

On the recording, first obtained by online portal hamrakura.com, Baskota can be heard negotiating with Mishra, the local agent for a Swiss company vying for a government contract regarding the purchase of a security printing press.

Two voices on the recording discuss various ways of extracting commission and the sharing out of that commission. The voice said to be of Mishra informs Baskota that the Swiss company will be coming to Nepal on the invitation of the Swiss embassy with an expectation of signing a Memorandum of Understanding.

Baskota resigned last Thursday, saying questions had been raised against him.