PTI 
 
NEW DELHI, July 20: President APJ Abdul Kalam received an email containing a threat to his life, following which security agencies swung into action to trace the sender.

The email, received last evening on the President's official website - presidentofindia.nic.in - was sent from Yahoo, sources said.

Security officials immediately took all necessary precautions and launched an operation to trace the origin of the email, they said.

The cyber cell in the Home Ministry was handed over the one paragraph email and it was suspected that the sender of the mail could have used a fictitious name.

The web portal's India office in Mumbai was immediately contacted to help trace the sender of the mail and the place from where it was sent, the sources said.

In the wake of the blasts on Mumbai's commuter trains on July 11, newspapers and television channels have received a flurry of emails and phone calls from unidentified persons who either claimed responsibility for the Mumbai train blasts or warned of more such strikes.

Police arrested a youth named Sumit Tamrakar from Bhopal for sending an e-mail to a Hindi newspaper that claimed responsibility for the Mumbai blasts, in what considered to be the action of a prankster.