Kanpur: Under Operation grid lock the IG Zone Alok Singh was on his way to conduct cross checking on Thursday. As he was passing through Raipur edge in Sachendi his private car was stopped by the police officer on duty. The driver lowered the window pane but the policemen were surprised to see him seated in the car. He got down and patted the officer's shoulder. He asked the police inspector and others to be vigilant. They should not leave any vehicle without proper checking, he stated.