While the police claims the mail is a hoax, IT companies are taking no chances. The e-mail, which has been passed on to the city police's cyber crime wing, also talks about a plan to assassinate a top Bharatiya Janata Party [ Images ] leader.

'We do not want any foreign investment in India [ Images ]. This time no one can stop us in our mission and the attack would be executed between March 13 and 26,' warns the e-mail.

It also mentions how ill-equipped Indian security forces are to combat terrorism. 'The police department has been given sub-standard bullet-proof jackets. This helped us to kill them. All National Security Guard commandos are given the same poor quality helmets and bullet-proof jackets,' the e-mail said.

'Send the security personnel and commandos to us,' the e-mail continued, 'we'll train them and provide our guns and strong bullet-proof jackets.'