Islamabad - Islamabad Police on Wednesday conducted search operation in Sihala and arrested 11 suspects for further interrogation, a police spokesman said. The officials of Islamabad Police, police commandoes and women police participated in the search operation in Model Town and its adjacent areas and arrested 11 suspects. Senior Superintendent of Police (Operations) Islamabad Sajid Kiani said that purpose of the operation and high vigilance was to ensure foolproof security in the city. He directed all the station house officers to continue such operations and appealed to the citizens to remain vigilant and inform police in case of any suspicious activity around them.