DAVENPORT, Iowa (AP) — Police in Davenport say a man has been arrested on suspicion of killing his mother. The Quad-City Times reports that police were called to the PR Masonry Apartments in Davenport late Tuesday afternoon to check on the welfare of a person. Arriving officers found the body of 77-year-old Dianna Rupp inside one of the units.

Police have not said how she died. Police on the scene arrested Rupp’s son, 53-year-old Andrew Rupp. He was initially charged with interference of official acts and drug possession. Police say he was later charged with first-degree murder.