An early Thursday incident prompted a hazmat team to respond to a 911 call about a mass suicide at around 6:29 a.m.
But when firefighters arrived at the scene at 221-15 Hempstead Avenue, they discovered that a 30-year-old man acting erratically has fatally stabbed his 72-year-old dad and attacked others.
The man’s 70-year-old mom, a 29-year-old female relative, and a 32-year-old man were also injured and remain in critical condition.
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The victims couldn’t be questioned over a motive since they were unconscious and unresponsive, police said.
The suspect was taken into custody and brought to Queens General Hospital for a mental examination.
Further details are expected as the investigation proceeds.
