A SON allegedly stabbed his dad to death in the bathroom and three relatives were found unconscious with no injuries lying on a mattress.

Police responded to a 911 call of an "emotionally disturbed person" at 6.29am on Thursday morning.

Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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Fire Department crews were at the scene on ThursdayCredit: FREEDOMNEWS.TV
Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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A stretcher was pictured at the sceneCredit: FREEDOMNEWS.TV
Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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A large police presence was seen outsideCredit: Adam Gray/The US Sun

Initial reports arose, which were confirmed to The Sun by the fire department, that a mass suicide had taken place in the location, and hazmat teams were sent to the scene.

However, when officers entered the building, they found a 30-year-old man acting erratically.

Joseph Kenny, Assistant Chief to the Detective Bureau said that upon arrival he was acting "very incoherently" and "made statements that he had injured somebody inside of the apartment."

Entering the house, at 221-15 Hempstead Avenue, cops found a 72-year-old man with trauma to his torso, who was pronounced deceased by emergency medical services.

Kenny said that the elderly man was found lying in the bathroom with multiple stab wounds.

Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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Joseph Kenny said the dad was found lying in the bathroom with multiple stab woundsCredit: Adam Gray/The US Sun
Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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The apartment building was taped offCredit: Adam Gray/The US Sun
Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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Ambulances and fire department trucks were at the sceneCredit: FREEDOMNEWS.TV
Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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The incident took place at 221-15 Hempstead AvenueCredit: Adam Gray/The US Sun

Three other people, a 70-year-old believed to be the suspect's mother, a 31-year-old believed to be his brother and a 29-year-old believed to be his sister-in-law, were found unconscious and unresponsive on a mattress.

They did not have any trauma signs to their body, Kenny said, so detectives are investigating how they were found unconscious.

Kenny said that the Fire Department were at the scene and determined there was no elevated CO2 levels in the apartment.

The victims were taken to an area hospital in critical condition.

The 30-year-old was taken into police custody and for a mental evaluation at Queens General Hospital.

Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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Officers were at the sceneCredit: Adam Gray/The US Sun
Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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Cops were at the scene all morningCredit: Adam Gray/The US Sun

Police said that they were still trying to determine a cause of injuries from the three injured victims.

A hazmat crew was also called to the scene, the New York Fire Department said.

Dudley, 44, who owns a repair shop across the street said: "I came to work this morning around 8am and the place was swarming with cops.

"There was cops everywhere, firefighters everywhere.

"I’ve been here for five years and I’ve never seen anything like this. This area usually nice, cool, calm."

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Cops and detectives were barricading the entrance to the apartment building, and a crime scene unit van arrived just shortly after 10am.

Queens District Attorney Melinda Katz visited the crime scene, but did not comment on the incident.

If you or someone you know is affected by any of the issues raised in this story, call the National Suicide Prevention Lifeline at 800-273-TALK (8255) or text Crisis Text Line at 741741.

Hazmat incident: Son ‘stabs dad to death in bathroom’ and 3 relatives found ‘unconscious with no injuries lying on bed’

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The NYPD took photos at the sceneCredit: Adam Gray/The US Sun

A SON allegedly stabbed his dad to death in the bathroom and three relatives were found unconscious with no injuries lying on a mattress.