Elmont High School Weapon Incident: 18-Year-Old Student Arrested After Switchblade Found on Campus

An 18-year-old student has been arrested after a switchblade knife was reportedly discovered inside his backpack at Elmont Memorial High School in Nassau County, New York.

The incident occurred on Tuesday, November 10, 2026, at approximately 1:50 p.m., when Nassau County police officers from the Fifth Precinct responded to a 911 call at the school, located at 555 Ridge Road in Elmont.

According to the supplied police account, school staff discovered the weapon inside the student’s backpack and detained him while waiting for officers to arrive. The student was identified as Dayvion Campbell, an 18-year-old resident of Elmont. He was taken into police custody without incident and charged with fourth-degree criminal possession of a weapon.

Key Details

Switchblade Discovered Inside Student’s Backpack

According to the police account provided, the incident came to attention after a 911 call prompted officers from the Nassau County Police Department’s Fifth Precinct to respond to Elmont Memorial High School.

The switchblade was reportedly found inside the student’s backpack. School staff detained the student while awaiting police assistance.

The discovery prompted a law enforcement response at the campus, although the information provided does not establish whether classes were disrupted or whether additional security measures were introduced.

Dayvion Campbell Taken Into Police Custody

Police identified the student as Dayvion Campbell, 18, of Elmont, New York.

He was reportedly taken into custody without incident following the discovery of the knife. Authorities subsequently charged him with fourth-degree criminal possession of a weapon.

The specific court appearance details, plea, and any subsequent legal developments have not been provided.

Criminal Charge and Legal Proceedings

The charge of fourth-degree criminal possession of a weapon relates to the alleged possession of a prohibited weapon. The case will proceed through the legal system, where the allegations must be addressed through the appropriate judicial process.

An arrest and criminal charge do not establish guilt. Campbell is presumed innocent unless and until proven guilty in court.

School Safety Concerns

The incident has renewed attention on campus safety and the importance of reporting potentially dangerous items found in school environments.

School staff responding to the discovery detained the student and contacted