Security personnel from Delhi Police and paramilitary forces have been deployed in and around the city, especially near the Red Fort from where Prime Minister Manmohan Singh unfurled the tri-colour and addressed the nation for the 10th consecutive time.
Central security agencies last week had given inputs to police that Pakistan-based terror outfit Lashkar-e-Taiba may try to target markets or places of strategic importance in the city.
In view of the threat, security personnel have been deployed at the airport and at market places, railway stations, inter-state bus terminals and metro stations. Security has been further beefed up in the New Delhi area.
At least 80 companies of security forces (around 6,000 personnel), along with other security personnel in plain clothes, have been deployed at Red Fort and in its vicinity, said a senior police official.
The localities around the Red Fort have been sanitised before the event and informers were deployed to keep a check on any movement of anti-national elements, the official said.
Specialised units like Quick Reaction Teams, SWAT and Vajra were also deployed.
Delhi Police carried out intensive checks at all the border points. Vehicles entering the city were randomly checked.
