Imphal, Aug 5: Imphal West Police team today conducted combing operation at Khuyathong and Hao Keithel Area near Old Assembly road today. According to report, the IW Police team first conducted the search operation at Khuyathong Polem Leikai at around 5 am. A total of 13 persons who failed to produce proper identification cards were picked up for further verification at Imphal West Police station. Another team of Imphal West Police also conducted search operation at Hao Keithel area near old Assembly road at around 12 noon today. Around 21 suspects were pulled up for verification at city police. The combing operation is being conducted as a part of the precautionary measure to prevent any attempt to foil the Independence Day celebration of August 15 by anti social elements.