From the FBI:

David Coleman Headley, a U.S. citizen partly of Pakistani descent, was sentenced today to 35 years in prison for a dozen federal terrorism crimes relating to his role in planning the November 2008 terrorist attacks in Mumbai, India, and a subsequent proposed attack on a newspaper in Denmark. Headley pleaded guilty in March 2010 to all 12 counts that were brought against him following his arrest in October 2009 as he was about to leave the country. Immediately after his arrest, Headley began cooperating with authorities.