Donald Grier, 40, was is facing three counts of felony first-degree murder, attempted murder and related charges.
NEW CASTLE, Del. - Authorities say a fourth victim of a fatal stabbing incident in Delaware has died.
New Castle County Police say 68-year-old Donald Grier, 68 died shortly early Thursday.
Grier had been hospitalized in critical condition since the Dec. 3 stabbing at a townhome in Townsend.
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Officers found his wife, 71-year-old Alicia Grier, mortally wounded inside the residence, along with the bodies of 53-year-old Linda Santucci and 19-year-old Michael Santucci Jr.
Authorities have charged 40-year-old Donald Grier Jr. with multiple counts of murder and other crimes.
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