if confirmed as an attack, would be the first significant security incident since April 22, when 26 mainly Hindu civilians were killed at the tourist site of Pahalgam in Indian-administered Kashmir, triggering clashes with Pakistan. "The country's leading investigative agencies are conducting a swift and thorough inquiry into the incident -- findings of the investigation will soon be made public," Defence Minister Rajnath Singh told a conference in New Delhi. "I want to firmly assure the nation that those responsible for this tragedy will be brought to justice, and will not be spared under any circumstances."

Crime scene investigators scoured through the wreckage of a car early on Tuesday, hours after the intense explosion. Senior Delhi police officer Raja Banthia said they were investigating the blast, near the landmark Red Fort in the crowded Old Delhi quarter of the city, under anti-terrorism laws. (Bssnews)