The man who tried to extort $2 million from David Letterman has been behind bars since his sentencing back in May, but TMZ.com reports that Robert Halderman, a former CBS News producer, has been released after serving four months of his six month sentence.

Halderman had two months knocked off of his six-month sentence for good behavior, the story reports. He must now complete 1,000 hours of community service to fulfill the terms of his agreement with the court.

Last year, Halderman attempted to extort $2 million from the CBS host by threatening to expose Letterman’s extramarital affair. Instead, Letterman revealed the affair on air and worked with authorities to get Halderman convicted in the blackmail attempt.