A 73-year-old Maryland woman was fatally stabbed Thursday when she tried to intervene in an argument between her granddaughter and a man who attempted to break into her home.

Angelo Terrell Spencer, 24, was charged with first-degree murder and assault in connection to the death of Mary Catherine Bland and an attack on the 17-year-old granddaughter, who survived with non-life-threatening injuries, Bel Air police announced . He was also charged with rape, though it was not immediately clear if that was alleged to have occurred as part of the same incident.

According to a press release , officers responded to Blands home shortly before 3 p.m. on Thursday to find her suffering from multiple stab wounds. She was immediately taken to a hospital, where she was pronounced dead.