The shooting of Taiwanese tourists in Old Delhi on Sunday by gunmen had been over-hyped,Chidambaram said in the interview. It was an opportunistic attack,and we think local gangs were responsible. We are not yet prepared to call it a terror attack at this stage. A number of people are being questioned but no formal arrests have been made. The e-mail that came a few hours after the firing has been traced to a server in a foreign country Norway, the Home Minister revealed,adding that the e-mail was sent from a GPS-activated mobile phone. Nothing in the email itself directly links it to the shooting. It just could be that the e-mail was issued couple of hours after the shooting,taking advantage of the incident which they might have heard on television or radio, Chidambaram added.