ISLAMABAD: The Muttahida Qaumi Movement (MQM) on Monday staged a walkout in the Senate over worsening law and order situation, extortion and target killing incidents in Karachi. MQM Senator Tahir Hussain Mashhadi told the Upper House that the government had totally failed in arresting the culprits and bringing peace to the industrial hub of the country. Despite repeated request to the government for action, the law and order situation in Karachi remained the same. As a protest, Mashhadi said, they walked out of the Upper House. staff report