Sri Lanka tri forces have been ordered to shoot all those who plunder public property or cause personal harm, local media reported on Tuesday as large-scale protests continue to take place across the island nation.

The comes nationwide protests against the government have intensified over the past few days resulting in an increase in incidents of clashes with the security forces deployed at protest sites.

"The Ministry of Defence has ordered the tri-forces to open fire on anyone looting public property or causing harm to others," Army Spokesman told Daily Mirror.

Anti-government protesters also set on fire the official residences of Sri Lanka's Moratuwa Mayor Saman Lal Fernando and the MPs Sanath Nishantha, Ramesh Pathirana, Mahipala Herath, Thissa Kuttiarachchi and Nimal Lanza.

Former Sri Lankan Prime Minister Mahinda Rajapaksa and some of his family members have been shifted to Trincomalee Naval Base, a day after he resigned following violent protests that led to a nationwide curfew. The US on Monday said that it is closely monitoring the volatile situation in Sri Lanka after the protestors burned the houses of Ministers.