The CBI has registered a preliminary enquiry (PE) against Trinamool Congress Lok Sabha MP Mahua Moitra on a reference from anti-corruption ombudsman Lokpal, officials said Saturday.

BJP MP Nishikant Dubey had approached the Lokpal with a complaint against Moitra over allegations of taking bribes to raise questions in Parliament.
Dubey had also accused Moitra of compromising national security for monetary gains.