SHAVANO PARK, Texas – The man authorities say killed his elderly grandmother during a mental health call in Shavano Park has been identified after being arrested Wednesday.
Joseph Martin Finnegan, 27, was charged with murder after deputies found him at the home in what officials described as a bloody scene, according to the Bexar County Sheriff’s Office.
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Bexar County Sheriff Javier Salazar said deputies were called just before 5 p.m. to a home off Long Bow Road in Shavano Park after the victim requested help from the SMART mental health unit, reporting her grandson was experiencing a mental health crisis.
A deputy arriving from Lackland Air Force Base made contact with the victim earlier by text, but received no response. When the deputy reached the home around 5:30 p.m., he saw a man inside and observed signs of blood before the suspect answered the door. Deputies also saw the victim inside the residence from the doorway.
Authorities say the suspect was taken into custody at gunpoint. The woman, believed to be in her 70s or 80s, was pronounced dead at the scene.
Investigators believe she was stabbed or bludgeoned while deputies were responding to the call. Sheriff Salazar said the suspect had a known history with local law enforcement and was prone to “bouts of violence.”
The investigation is ongoing.