Sri Lanka Podujana Peramuna (SLPP) Gampaha District MP Kokila Harshani Gunawardena has tested positive for Covid-19. Her husband and daughter have also been infected with the virus.
Confirming their status not critical, the MP and the others are being treated at a private hospital.
MP Gunawardena did not attend the recent Parliament sittings.
Earlier, two Ruling Party MPs tested positive for the virus. Tamil National Alliance (TNA) Batticaloa District MP Shanakiyan Rasamaniccam also tested positive for the virus and is receiving treatment.