Delhi Police is likely to take over all Commonwealth Games venues on Tuesday and start plugging security loopholes, if any, to ensure an incident-free event which high on terror radar.Though there is no specific threat to Games but a general one, security establishment is leaving no stones unturned for the mega event which would showcase country’s ability to hold such events.Delhi Police, which is the nodal agency for Games security, will conduct various drills, including anti-sabotage checks once they take over possession of the venues, a senior police official said on Monday.Apart from around 80,000 Delhi Police personnel, over 17,500 paramilitary personnel, 3,000 commandos and 100 anti- sabotage check teams will be deployed across the city. The Army has been asked to be alert.Once security personnel take over the venues, the entire venue will be completely sanitised by security personnel and are sealed after a thorough check.Concerns were earlier raised about the delay in handing over venues to security agencies as some quarters felt that it would hamper the security preparations.Delhi Police Commissioner Y S Dadwal, however, downplayed the delay and said the force was prepared to handle the security issues related to the sporting extravaganza.”We know the stadia and surrounding areas. We know the city very well. So securing them or other areas will not be a problem,” Dadwal said when asked whether the delay in completion of Games projects was compromising security preparedness.Union Home Minister P Chidambaram will review the arrangements on September 15, once the security overlays are put in place.advertisementHeli-borne snipers, four-layered security cordon around Commonwealth Games venues and exclusive lanes for Games vehicles were among the components of the mammoth security plan for the event.The security plan prepared for the mega event, which will see participation of around 8,500 athletes from 71 countries competing in 17 events, also envisages snipers on rooftops, commando hit teams and expert groups to tackle any chemical, biological, radio-active or nuclear attacks.Air Force will provide surveillance from the skies.Heli-borne assault teams will also be deployed to thwart any terror strikes.”We are closely working with central intelligence agencies. The Air Force will be surveying the airspace. We will have heli-borne snipers patrolling the skies,” a senior police official said.According to the plan, the venues, Games Village, practise and parking lots and Indira Gandhi International Airport where athletes arrive will have a four-layered security cordon. . At the outer cordon, the traffic will be stopped and access controlled. At the middle cordon, security-men will channelise the spectators to their designated seats while in the inner cordon, the barcode reading of tickets will take place and the spectators’ photos captured.At the centre would be an exclusion zone which is in the 30 metre radius of the stadium, where spectators and others will have to go through Door-Frame Metal Detectors and X-Ray scanning besides manual searching.Mobile Quick Reaction teams will be deployed on the outer perimeter of the venues besides a close watch through CCTV surveillance.The Games village will also have a similar elaborate security arrangement. The boundary of the village will have a three metre high perimeter wall, a 1.5 metre high iron grill on top of it, mobile QRTs and CCTV surveillance system.Elaborate arrangements are also made for the entry for athletes and vehicles into the village. After entering the village following a thorough check, the athletes can freely move around the residential and dining halls.For vehicles, the drivers will have to pass through radio frequency identity checking where the number plates are checked to see whether are authorised to enter the place.There is a boom barrier and it will be opened only after the vehicle clears the radio frequency checking. But if somebody tries to forcefully enter, there will be a tyre- killer and even if the vehicle clears it, the road blocker will block the passage of the vehicle.At the hotels, there will be “robust” security arrangements with watch towers, CCTV surveillance and access control. “All food prepared and served for Games guests in hotels will be sorted by security personnel and tasted by food experts,” the official said.With large number of athletes, officials and tourists reaching the city for the Games, security at and around the Indira Gandhi International Airport is also being augmented.Anti-sabotage teams, commando hit teams and snipers at rooftop are some of the other components of security plan for the safe journey of the athletes and other officials.On the movement of athletes and other officials to venues, the official said commandos will be deployed on buses they travel.advertisementPolice has also procured three armoured cars ahead of the Games and these vehicles move around the city and sometimes will stationed at venues during the Games.Each carrying 30 commandos, armoured vehicles would be deployed to tackle eventualities like terror strikes.For the Games, Delhi Police personnel are also being specially trained in frisking, search operations and screening baggage through X-Ray machines. Special training on enhancing communication skills and behavioural patterns were also being imparted.