LYNN – A Lynn man who escaped from prison in New Hampshire over the weekend turned himself in Sunday afternoon.Stephen Foster, 36, a minimum security inmate, was last seen Saturday night at the Calumet Transitional Housing Unit in Manchester, N.H. during the facility?s population count. Around 2 a.m. Sunday morning, authorities discovered that he was missing from his room during a routine inspection.Foster returned to prison on a parole violation Feb. 17. He was originally sentenced to five to 10 years for an armed robbery in Merrimack County Superior Court with a maximum release date of Dec. 14 before he went missing.As a result of his weekend jaunt, Foster will be charged with escape and a class B criminal charge that carries a maximum of seven years in state prison if convicted.According to New Hampshire Department of Corrections spokesman Jeff Lyons, Foster has been returned to the New Hampshire State Prison for Men in Concord. Investigators are now looking into how Foster got out of the center and what he did while on the run.