A high school student in Queens was taken into custody when police found a loaded gun on him after he allegedly posted a threat online about shooting up the school, according to police .

The teenage student, who has not been identified, allegedly posted on Instagram about carrying out a shooting at Cardozo High School in Bayside. The student posted a photo of a school assignment he had been working on in a classroom, along with the words "boutta shoot the school up."

Instagram then contacted the FBI and the NYPD. The FBI's New York field office said the NYPD was deployed to the school "to address this potential threat."

Authorities on Thursday found the student with a loaded .9-mm semi-automatic gun in his backpack, along with 13 rounds of ammunition, police said. The 10th-grade stude

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