On the eve of 'Maha Shivratri' festival, Gujarat as well as other metros and Jammu and Kashmir were also on high alert with raids conducted at Kutch and other places, security being beefed up at vital installations, sensitive areas and at all main temples including the famous Somnath temple where a NSG team has been deployed.
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The Gir-Somnath district authorities have postponed tomorrow's cultural event at Somnath temple owing to the terror threat.
In Kolkata, security has been stepped up at NSC Bose International Airport after an e-mail threat that it would be blown up within 24 hours, airport officials said.
The e-mail came in the airport manager's ID early today and it was claimed to have been sent from Germany, they said.
In the national capital, security was beefed up at vital installations, important buildings and crowded places after Delhi Police received inputs about a potential terror strike in the city. A constant vigil was maintained near prominent malls, hospitals, schools and colleges.
A police source said the input specifically mentions about 10 militants of Lashkar-e-Taiba (LeT) and Jaish-e-Mohammed (JeM) outfits having entered India via Gujarat and that they could carry out a terror strike in Delhi.
The Special Cell and Crime Branch of Delhi Police have been briefed about the input separately, so that activities of gangs operating in and around the city and elements with suspected terror links can be monitored.
The police are also ensuring that CCTV cameras at all places with high footfall, like popular markets in the city and metro stations are functional. Patrolling across the city has been intensified.
Heavy security was also put into force at important Shiv temples in Uttar Pradesh and special security checks were in place at the Kashi Vishwanath temple in Varanasi.
Special vigil was being maintained on big and small temples in places like Kanpur, Agra, Lucknow, Faizabad, Gorakhpur, Azamgarh and other important places, the official said.
Police was also keeping a close eye on the 'kanwarias' (devotees who carry holy Ganges water and walk bare foot to offer it to Shivlinga's) as there was an apprehension that they may be targeted by terror outfits.
Security has been ramped up at major religious sites in Gujarat like Somnath Temple and Akshardham and in metro cities -- Mumbai, Delhi, Chennai, Kolkata and Bengaluru.Vital installations across the metros like railway stations and airports are also being secured.
An Advisory has been issued to enhance security at all strategic locations, sensitive industrial sites and religious places in Gujarat after intelligence inputs suggested that the terrorists have entered the state taking the sea route, official sources said.
Gujarat DGP P C Thakur held a meeting with NSG officials in Gandhinagar and announced that one team will be sent to step up security at Somnath temple in Gir-Somnath district. Thakur issued orders late last night cancelling leave of all policemen.
"Four teams of NSG reached here(Gandhinagar) last night. Out of these, three will remain here, while one team will go to Somnath," he said. The size of each team could vary between 50 to 90 personnel.