No one has as yet claimed responsibility but police said the militant group ULFA (United Liberation Front of Assam) is being thought of as a suspect since it had called for a boycott of Republic Day celebrations.
In Kashmir meanwhile, police said they had apprehended a suspected woman suicide bomber.
A lady who is suspected to be a suicide bomber has been apprehended, we will verify facts and talk to her, only then can we come to a conclusion: Munir Khan,ADG,J&K Police pic.twitter.com/NWepMesu5j
Intelligence agencies had put out an alert earlier, saying a fidayeen attacker was thought to be in the Valley.
They had added the attacker might be female and that everybody entering a venue where Republic Day was being celebrated was to be thoroughly frisked. Including women.
Republic Day celebrations in Jammu and Kashmir and Assam, and other parts of the country troubled by insurgency, are usually held under heavy security.
In Punjab meanwhile, a police constable shot himself with his AK-47 at a Republic Day function at a school in Jagraon. Police said Manjit Singh died on the spot.
They added that an investigation was underway, and that Singh had been depressed because of family troubles.
And finally, a woman and her two sons were detained in Mumbai while trying to enter a Republic Day venue. The woman, ANI said, was reportedly angry over the death of her husband in custody and was planning on immolating herself.
On the good news front, mobile and internet services, which had been suspended in Kashmir for security reasons, were restored early in the afternoon.