The US has indicated that the FBI has evidence linking American terror suspect David Coleman Headley and his Pakistani-Canadian accomplice Tahawwur Rana to the deadly Mumbai terror attacks.A Federal Bureau of Investigation team arrived in New Delhi today for discussions with their Indian counterparts during which it may share information on Headley's links with several people in the country, including those linked to the Mumbai terror attacks.Sources said the FBI has promised a lot of additional material on the interrogation of Headley and Rana, who have been arrested in the US for allegedly plotting terror attacks in India and Denmark.