AAP MP Sanjay Singh Tuesday accused the Delhi Police of "inaction" in dealing with those responsible for the ruckus at the inaugural function of the Signature Bridge here Sunday and demanded that it register a case against Delhi BJP chief Manoj Tiwari.

In a letter written to Delhi Police Commissioner Amulya Patnaik, he alleged that Tiwari, accompanied by Bharatiya Janata Party (BJP) workers, attempted to "physically harm" Chief Minister Arvind Kejriwal and other ministers and also "beat up and humiliated" two on-duty police officers at the event. Questioning why no case was registered against Tiwari 48 hours after the incident, the Rajya Sabha MP of the Aam Aadmi Party (AAP) said the police in the country, particularly in Delhi, worked under "tremendous political pressure".