New Delhi, Aug 13 - Snipers, X-ray machines and choppers are part of tight security measures taken across Delhi ahead of Independence Day Aug 15. The historic Red Fort, where Prime Minister Manmohan Singh will unfurl the tricolour, has virtually turned into a security citadel.

Though senior police officials claim there is no specific terror threat, they are leaving no stone unturned to ensure 'extraordinary' security in and around the capital. Delhi Police have been busy coordinating with the police forces of the adjoining states of Haryana, Uttar Pradesh, Punjab and Jammu and Kashmir.

According to police officials, over 5,000 security personnel would be part of the security arrangements.

The security agencies have decided to deploy snipers, metal detectors, X-ray machines, sniffer dogs, radio frequency jammers and CCTVs at all public places. Specialised units drawn from several wings of Delhi Police will be on the alert to thwart any terror attacks.

Contingency plans are in place should a terrorist strike happen. Designated safe houses for Prime Minister Manmohan Singh and other VIPs have been earmarked in case there is an emergency.