Virgil E. Ball, 59, entered his plea in U.S. District Court in Greenbelt. He was a cage clerk at the postal service’s distribution and processing hub in Capitol Heights, where his duties included gathering sealed envelopes collected from post offices in southern Maryland, putting them in secure deposit bags, then scanning the bar codes to create a manifest listing the contents, according to prosecutors. Then he handed the deposit bags to an armored truck for bank delivery. He also manually wrote and signed a checklist showing where the deposits came from.

According to court documents, on Oct. 24, 2008, Ball scanned the envelopes he had received that day and signed a form showing he had received the day’s deposits. But he did not include the deposit envelopes from three post offices in the bag he handed to the armored truck, keeping them for himself instead. He had pulled checks totaling $43,221—$34,178 in cash and another $9,043.22 in checks.

He faces a maximum of of 10 years in prison, followed by three years of supervised release, and a $250,000 fine. Sentencing is scheduled for Oct. 31.