A red alert has been issued in Delhi, Indore and Kanpur. Earlier, a general advisory was issued to all states to be on alert.Home Minister P Chidambaram has dismissed the allegations of intelligence failure leading to Pune blast.Reacting to Mr Chidambarm's statement, Leader of Opposition in the Lok Sabha Sushma Swaraj has said the failure actually was on the part of the government.Pakistan Prime Minister Yusuf Raja Gillani has condemned the blast.