KARACHI  -  The MQM-Pakistan on Wednesday imposed a ban on display as well as the use of weapons by its workers. The circular was issued by MQM-P coordination committee on Tuesday. The circular further said MQM-P was a peaceful party, use or display of any type of weapon was strictly prohibited. Any worker found involved in display of weap­ons or aerial firing will be ex­pelled from the organization, the circular said.