PESHAWAR: The Central Police Office (CPO) here has sought details of stock of tear gas shells after reports emerged that it was used by PTI protesters during the Islamabad demonstration. Through a letter, the CPO has issued directives to all deputy inspectors general and unit heads, seeking details of tear gas stock available and its usage over the past week. Details of the exact tear gas stock available and its usage during the last one week should be provided, the CPO ordered. The letter said keeping in view these reports, a team from office of the AIG/Logistics, CPO, Peshawar, would conduct a physical verification of available stocks of tear gas with regions and different units vis-a-vis data of stocks being conveyed to CPO, Peshawar, by different regions, units on monthly basis, it said. Islamabad police chief Ali Nasir Rizvi had revealed during a presser that weapons, including automatic rifles and tear gas guns, were seized from the protest site. Mr Rizvi denied that live ammunition had been used during the operation by the Islamabad police. Giving reference of a previous directive of November 21, instructing KP police personnel to refrain from any political engagement, the letter said tear gas use during the Islamabad protest had raised suspicions.