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Sad news: a producer of Fox's hit series Prison Break was found dead yesterday in his room at Chicago's Drake Hotel, from what appears to be a drug overdose:

Matthew Houbrick, 42, of Calabasas, Calif., was found dead about 3:30 p.m., in his 6th floor room at the Drake Hotel.

Some white powder, believed to be cocaine or heroin, was also found in the room, a source close to the investigation told the Chicago Sun-Times.

It was unclear how long Houbrick had been dead, but a police source said a Hollywood producer was concerned about the man and asked hotel staff to make a well-being check. Police officials obtained the information about his job title, but Fox network spokesmen did not confirm Houbrick's death late Monday.

UPDATE: Houbrick was not listed on IMdB, Studio System or the Prison Break website. However, a reader who had recorded last night's episode and found his credit informs us that Houbrick was Prison Break's accountant, and not a producer:

I checked the opening credits, which listed about a dozen different producers, none of them him. Then I looked at the closing credits, where he was listed about six screens in as the accountant.