Muttahida Qaumi Movement (MQM) boycotted the briefing in Sindh Assembly over Karachi law and order for the second day on Friday.
The party lawmakers protested and shouted slogans in the Assembly.
The decision was take in meetings of the coordination committee in London and Karachi.
On Thursday, MQM’s provincial legislators had staged a walk-out from an in-camera session of the Sindh Assembly on Thursday over what it called a move by the government to withdraw cases against members of the banned People’s Amn Committee.