A 51-year-old man fatally shot a woman — with whom he’d previously had a relationship — and then killed himself in a Germantown parking lot, authorities said Tuesday.

       Just after 9 a.m. Monday, officers were called for a report of gunshots in a townhouse community in the 18900 block of Highstream Drive. There they found Michelle Carter, 50, and Richard Maurice Harris, 51, with gunshot wounds in a parking lot, police said.

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       Both were pronounced dead at the scene. A handgun was found nearby.

       Police are investigating the case as a murder-suicide, officials said in a statement, adding that “Carter and Harris had previously been in a relationship.” No further details were released.