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Man admits killing his mother in their Avon, Massachusetts home, police say

Man accused of killing mother in Avon home held without bail
Man accused of killing mother in Avon home held without bail 01:49

A 23-year-old man has been charged with the murder of his mother in their home in Avon, Massachusetts, after police say he admitted to killing her.

Thadeus Joseph was ordered held without bail after he was arraigned on a murder charge Wednesday in Stoughton District Court in the death of 53-year-old Astrid Joseph.

Mother murdered

Police went to the family's home on Nichols Avenue Tuesday afternoon after getting a 911 call from "a household member about an unresponsive female in need of medical assistance," according to a statement from Norfolk County District Attorney Michael Morrissey.

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Police say Astrid Joseph was killed in her home on Nichols Avenue in Avon on March 4, 2025. CBS Boston

Astrid Joseph was "on the floor of the home with visible injuries and there were signs of a struggle," according to Morrissey, who said she was dead.

"With information developed by the state police detectives assigned to the Norfolk District Attorney's Office and Avon police, a suspect was identified and apprehended with the help of Braintree police," the district attorney said in his statement.

The suspect, later identified as Joseph's son Thadeus, was captured around 8 p.m., about four hours after police were called to the house.

Son's alleged confession

Prosecutors said Thadeus Joseph was acting erratically during booking and admitted to killing his mother, allegedly telling police, "This is so funny, all I had to do was kill my mom and then this is it."

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Thadeus Joseph in Stoughton District Court on March 5, 2025. CBS Boston

According to prosecutors, Joseph told his parents on Saturday he was experiencing anxiety and having thoughts of self-harm. On Tuesday, he took a mental health day off from work. At around 10 a.m., Astrid Joseph called her husband, who could hear the two arguing.

"He heard the defendant say, 'I have your phone.' He then heard his wife respond, saying, 'I'm your mother, give me the phone.' The phone then disconnected," the prosecutor the court.

Astrid Joseph's husband raced home and found his wife's body lying on the kitchen floor and the family car gone. Thadeus Joseph, who recently graduated from UMass Lowell, was found a few hours later at the South Shore Plaza in Braintree and taken into custody.

Richard Gedeon, a family friend who attended the hearing, had no comment for reporters after the arraignment.

Joseph is being held without bail, which his attorney did not argue against, adding that Joseph had experienced some recent mental health and family issues. He's due back in court on April 10.

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