San Diego Sheriff’s Department. Photo by Chris Stone

Authorities Thursday publicly identified a San Marcos woman found slain this week, allegedly at the hands of her adult son.

Investigators discovered the body of Denise McCarthy, 68, at her home in the 800 block of El Toro Lane on Tuesday, according to sheriff’s officials. An autopsy determined that she died of blunt-force trauma and that her death was a homicide, Lt. Thomas Seiver said.

Deputies had gone to the victim’s residence after finding McCarthy’s son, Sean, 29, badly injured in a burning vehicle a few blocks to the northeast, on Foothill View Place in Escondido.

After emergency crews pulled him from the car, they took him to a trauma center, where he remained Thursday in grave condition.

While not expressly calling the crimes a suspected murder-suicide attempt, Seiver said detectives were not looking to identify or track down perpetrators.

“There are no suspects believed to be outstanding,” the lieutenant said.

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