Long Island

15-year-old Long Island boy allegedly murders grandma amid computer fight

He allegedly tried to kill his mother, too, but she is expected to survive

selden stabbing long island
News 4

This was the scene after the stabbing in Selden.

A 15-year-old Long Island boy was arrested for going on an alleged stabbing rampage inside his home that left his grandmother dead and his mother badly injured after the family threatened to take away his computer due to recent behavior problems.

According to Suffolk County police, the mother, Vanessa Chendemi, ran out of her Selden residence shortly before 10 p.m. Monday, having been stabbed. A driver passing by offered help, and Chendemi got in the vehicle and they called 911.

When officers arrived at the scene, they found Chendemi's 56-year-old mother dead with multiple stab wounds. The younger Chendemi, who prosecutors said had played dead on the ground right after she was attacked, was taken to a hospital and is expected to survive.

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The teenager ran from the scene after the stabbing, authorities said. He was apprehended nearby less than two hours later, his hands covered in blood. Two blood-stained kitchen knives were also recovered.

The boy, who has not been identified due to his age, was charged with murder and attempted murder. He was arraigned in First District Court in Central Islip later Tuesday.

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His lawyer cautioned against any rush to judgment, saying his client is "a 15-year-old child...and he is presumed innocent."

Authorities said there were no prior 911 calls from the home involving the son. There was one about a dispute involving the mother and grandmother, but officials say it was unrelated to the case. The three family members lived on the first floor of the split-family home.

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Prosecutors said the teen had been acting out in recent days, missing school and barricading himself in his room while spending a lot of time on his computer. When his grandmother told the mom to "just take the computer," the teen allegedly flew into a rage, allegedly stabbing his mother and then his grandmother in the torso and leg as she pleaded for help.

A family member who went to court on Tuesday to support the teenage suspect did not wish to comment on the case. The teen said nothing during his court appearance.

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