A retired top police official has filed a Rs 20 crore defamation suit against senior police officer D Roopa for bringing him under a cloud of bribery allegations over "preferential" treatment given to jailed AIADMK leader V K Sasikala in the central prison in Bengaluru.

In a report submitted in July to the then DGP (Prisons) H N Sathyanarayana Rao, Roopa as Deputy Inspector of General (Prisons) had said there was "a talk" that Rs two crore had exchanged hands to give "preferential treatment" for Sasikala and that there were bribery allegations against him also.

Rao had rubbished the charge by Roopa, terming it "absolutely false, baseless and wild", and said he would take legal recourse against his junior.

Video footage too had surfaced purportedly showing the embattled AIADMK leader walking inside the corridors of the Parappana Agrahara Central jail sporting a salwar suit instead of the prisoner's dress, as is mandated for every jail inmate.