The terror e-mail claiming responsibility for the serial bomb blasts in Delhi on Saturday was sent from an IP address of a power company in Mumbai, officials from the Anti-Terrorism Squad said.

"The mail sent by a group named the Indian Mujhahideen soon after the blasts has been tracked to an IP address in the eastern suburbs of Mumbai," Additional Commissioner of Police Parambir Singh told PTI.

Singh added that investigations were on to track the IP address to a more specific place. The address from where the email was sent was that of Kamaran Power Limited in Chembur.