The Deccan Mujahideen group that claimed responsibility for the Mumbai terrorist attacks, has now threatened to attack the New Delhi, Banglore and Chennai airports between December 3 and 7, a private TV channel quoted Indian media as saying on Wednesday. According to the channel, the threat was given in an email sent from Saudi Arabia and received by Indra Gandhi Airport officials. Security at all the Indian airports was put on high alert after the email. Earlier, on November 26, the little known group had claimed responsibility for the deadly attacks that left almost 200 people dead.