Troubled Staten Island teen accused of decapitating mom’s beau shares gory confession details

The disturbed Staten Island teen accused of killing his mother’s boyfriend allegedly gave a full, gory confession – including that he planned to liquify the body in a blender and flush it down the toilet, starting with the brain, law-enforcement sources said.

Damien Hurstel, 19, allegedly calmly admitted to cops at the NYPD’s 120th Precinct that he fatally bludgeoned the 45-year-old sanitation department worker over the head with a meat tenderizer because he wanted to know what it was like to kill someone, sources told The Post.

The alleged spare-no-details confession came after cops took Hurstel, who has a long history of mental illness, into custody Monday evening, according to the sources.

Hurstel allegedly told police the brutal slaying unfolded after he argued with his mother during the morning, prompting her boyfriend – who still has not been publicly identified – to tell him to take a walk to calm down, the sources said.

The agitated Hurstel allegedly returned home to find his mother gone, leading to an altercation that ended with him beating the boyfriend to death with a meat tenderizer, the sources said.

He allegedly planned to cut up the body into pieces that he’d pulverize with a blender, but ran into trouble during the sick dismemberment, according to the sources.

A first attempt to sever the victim’s head with a kitchen knife failed, prompting the sick suspect to grab a hand saw from a shed to finish the grisly job, sources said.

He then allegedly used a hammer in a failed attempt to remove the boyfriend’s brain, but he was interrupted by his sister arriving home from school – leading to the shocking discovery and his eventual arrest, the sources revealed.

Hurstel was expected to be arraigned on murder and criminal possession of a weapon charges Tuesday afternoon.

But he appeared to suffer a seizure while being transported to a Staten Island courthouse and was taken to a hospital, sources said.