India, Aug. 21 -- Trinamool Congress joint secretary Derek O'Brien on Friday accused the ruling BJP of attempting to "cover up" the issue of pellet guns being used against protesting students in Delhi on July 20.

His remarks came as Lok Sabha Leader of the Opposition Rahul Gandhi staged a dharna at the Parliament Street police station here, saying he would not leave until an FIR was registered on a complaint filed by a youth who suffered pellet injuries during the Cockroach Janta Party-led protest on July 20.

"Pellets. On August 10, an RTI filed by TMC's Saket Gokhale first revealed the truth about the pellet criminal conspiracy. Modi-Shah's beleaguered government still in cover-up mode," O'Brien said.

The alleged use of pellet guns du...