The Papua New Guinea prime minister Peter O'Neill and other Southern Highlands MPs should meet and talk to their people in the province, the shadow attorney-general, Kerenga Kua, says.
His comments come after a violent rampage on Thursday and Friday last week in the capital, Mendi.
The rioters destroyed a plane and other property sparking a declaration of emergency by the government.
Mr Kua said Mr O'Neill, and Mendi MP Michael Nali, Southern Highlands Governor William Powi, Kagua-Erave MP Wesley Raminai, Nipa-Kutubu MP Jeffrey Komal and Imbonggu MP Pila Niningi should go back and face their own people and not hide behind the security forces.
The National newspaper said Mr Kua also called for calm in the Southern Highlands, saying there must be talks to find out the root cause of a breakdown in leadership in the province.
Every leader, including church and community leaders, should be involved in finding the solution, he said.