MARDELA, Md. (WJZ) — Maryland State Police are investigating a homicide on a Wicomico County farm.

Troopers found the body of 62-year-old Lee Harcum lying in a watermelon field in the 10000 block of Snethen Church Road. Authorities say there were obvious signs of trauma to his head.

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The preliminary investigation indicates an argument broke out between Harcum and his nephew while they were picking watermelons in the field.

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Investigators believe 31-year-old William Harcum III used a blunt object to strike his uncle in the head.

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He is charged with first and second-degree murder and assault.