Raghav Chadha found himself entangled in a big controversy after five Rajya Sabha MPs on Monday alleged that their signatures were forged on a motion submitted by Aam Aadmi Party (AAP) MP for a proposed Select Committee on the Delhi Services Bill. Amid the ongoing demand for strict action against the AAP leader, it has been learnt that the Rajya Sabha Chairman can recommend the filing of a First Information Report (FIR) against Raghav Chadha if he turns out to be guilty in the alleged 'forgery' incident.