This was revealed during a media briefing convened by the party in Colombo today.
The incident occurred when a group of Opposition MPs requested for an opportunity to take the report on Central Bank Governor, which was submitted to the COPE committee, for a debate.
MP Professor G.L. Peiris as well as 20 MPs stood and made the request, while several MPs expressed their views regarding the matter.
While Prime Minister Ranil Wickremesinghe was expressing his views regarding the matter, MP Wasudewa Nanayakkara tried to raise a point of order which led to the incident.