The MP is facing charges of being involved in an assaulting incident in Agalawatta on 18 January where he had allegedly made a PS member kneel down.
Earlier, police Spokesperson SSP Ajith Rohana said investigation is underway under directions from IGP N.K. Illangakoon.
The police had arrested three suspects and initiated a manhunt to arrest the rest.
President Maithripala Sirisena has also instructed the IGP to appoint a team of officers to investigate the attacking incident.