SPRINGFIELD, Mo. (AP) — A southwestern Missouri letter carrier with the U.S. Postal Service faces charges after police say he sexually assaulted a 78-year-old woman on his route.

The Springfield News-Leader reports that 59-year-old Mark Poag was charged Friday with first-degree sodomy.

Police say Poag was delivering the woman's mail one day in February when she invited him inside to drop it off. But police say instead of immediately leaving, Poag followed the woman to a bedroom and assaulted her.

Police say they used GPS data to determine Poag was at the victim’s house for nearly 20 minutes on the day of the assault.

Police say the trauma of the attack led the woman to move to a different home.

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