KARACHI/HYDERABAD - A strike was observed in various cities of Sindh on a call given by Jeay Sindh Qaumi Mahaz (JSQM) after police refused to register murder FIR of slain party leaders on Wednesday. Two senior JSQM leaders, Maqsood Qureshi, brother of late JSQM chief Bashir Khan Qureshi, and Salman Wadho, were killed on 21 March. Their severely charred bodies were found in a burnt car near Naushahro Feroze town of Sindh .