KARACHI: The law enforcing agencies (LEA) have continued their crackdown against Muttahida Qaumi Movement (MQM) as several MQM sector and unit offices have been closed-down in various areas of Karachi. The LEA have locked and shutdown several MQM offices located in Federal B Area, North Nazimabad, North Karachi and other areas. The security personnel have also displayed notices outside all the closed offices carrying warning that legal action will be taken against those found involved in reopening offices without permission.