Heavy security deployment marked India's 64th Republic Day celebrations on Saturday.
Personnel from various security outfits fanned out across the national capital New Delhi and other states to ensure that the event passed off without a hitch.
A ground-to-air security apparatus was put in place on the eve of Republic Day amid a call by rebel groups in the northeast for boycott of all celebrations.
In Mumbai, Shivaji Park Ground, where Republic Day celebrations were held, was declared a 'no flying zone' in the wake of intelligence inputs that suggested that terrorists might attempt air strikes.
In New Delhi, over 25,000 police personnel, including those from paramilitary and sharpshooters from NSG, were deployed.
Snipers took positions at high-rise buildings while over 150 CCTVs kept a tight vigil on the general public's movement between Rajpath and Red Fort, the route of the parade.
Mobile hit teams, anti-aircraft guns and sharpshooters of the NSG were also on the job at various places, while paramilitary and Delhi Police commandos kept a close watch along the eight-kilometre-long route of the parade from Raisana Hills to Red Fort.
A multi-layer security ring was put in place at Rajpath to prevent any untoward incident as the parade unfolded.
Security was tightened across Assam and other northeastern states following the boycott call of Republic Day celebrations by several militant groups.
In Assam, a red alert was sounded in view of intelligence reports that ULFA along with Maoists may carry out subversive activities. (ANI)