John Patrick Tomkins is an American who was convicted of sending several threatening letters and bomb-like devices to financial firms in the Midwestern United States under the pseudonym The Bishop. A machinist and lifelong resident of Dubuque, Iowa, he is now serving a 37-year sentence in federal prison. Beginning Beginning in 2005, threatening letters were sent to various financial institutions, demanding that certain stock prices be raised to $6.66 (the Biblical "Number of the Beast"). The letters were signed by "The Bishop". The return addresses on the letters were from various cities in the Midwest. The sender set deadlines for the stock prices to be changed, and threatened to take action if the deadlines were not met. The companies to whom the letters were sent had no way of manipulating stock prices, and the deadlines passed with no action from the firms "The Bishop" contacted. Bombs In January 2007, The Bishop mailed two pipe bombs; one to American Century Investments in Kansas City, and the other to Janus Capital Group in Denver which was in turn accidentally forwarded to a subsidiary investment firm located in the downtown Chicago area known as The Loop. The bombs had vital parts missing, and are believed to have been meant as warnings. A typed letter accompanied each device, suggesting that if certain demands were not met more letter bombs would follow. Theories Security analysts who have examined "The Bishop"'s modus operandi speculate that he may be emulating the 1972 Charles Bronson movie The Mechanic. In the movie, Bronson portrays an assassin named "Arthur Bishop", who uses bombs to kill others. Bronson also leaves a note for an intended victim saying "Bang, you're dead"—the same text was found in notes sent by "The Bishop" in his suspicious packages. Arrest On April 25, 2007, U.S. law enforcement agencies in Dubuque, Iowa, arrested John Tomkins of Dubuque, whom they believed to be "The Bishop." Authorities have identified the suspect as a 42-year-old former postal worker. He has been described as a machinist who is married. This does not fit the original criminal profile compiled by the FBI. According to sources , analyzing and following stock trading records led U.S. Postal Service investigators to the suspect. Also, it is reported that a photograph included in an October 25, 2005 threat letter showed the window of the vehicle from which the photograph was taken. The vehicle was identified as