Sachem North, Brennan High School, Salk Middle School see security incidents as school resumes on Long Island

A student at Sachem North High School was allegedly found with a knife Thursday while waiting for a school bus, at least the third security incident on Long Island since Tuesday, the start of the fall semester in most districts.

A student at Brennan High School in West Babylon was charged with allegedly threatening to "shoot people at the school," according to police, and a student at Salk Middle School in Levittown brought a bullet into the building, officials there said.

Suffolk County police said two Sachem North students were arrested following a dispute, during which one of them brought a knife to school.

After a 15-year-old boy brandished a knife at his bus stop Thursday morning, police said staffers at Sachem North in Lake Ronkonkoma waited for him to exit the bus, confiscated the weapon and notified authorities, according to a Suffolk County Police Department news release Thursday night.

The boy, whom police did not identify due to his status as a minor, was arrested and charged with fourth-degree criminal possession of a weapon.

Suffolk police said officers determined that the teen was threatened by another 15-year-old boy in July. This teenager, whom police also not identify because he is a minor, was also arrested and charged with second-degree aggravated harassment.

Both teens were released to the custody of their parents, police said, and are expected to be arraigned in Family Court on a later date. 

Regarding the alleged incident, Sachem Central School District Superintendent Patti Trombetta wrote in a message to parents, "The matter was quickly reported to an administrator and immediate action was taken to ensure everyone’s safety."

On Wednesday, a Lindenhurst teenager, a student at Brennan High School, was arrested and charged after allegedly threatening in an online chat "involving other students from the school, to shoot people at the school," Suffolk police said in a news release,

After school hours Wednesday afternoon, a 911 caller reported the 15-year-old student had made the threat, according to the police. The district said the alleged threat took place outside of school hours.

Following an investigation, the 15-year-old, whose name was not released due to his age, was arrested about 10:10 p.m. Wednesday and charged with making a threat of mass harm, a misdemeanor, police said.

He was released into the custody of family and will be arraigned at Suffolk County Family Court at a later date.

Michael Flynn, operating officer for Western Suffolk BOCES, said a robocall Thursday alerted parents of the threat and offered support services, including counselors on campus.

According to its website, Brennan High School serves students who present a variety of educational and emotional needs.

The Salk Middle School student did not bring a weapon with the bullet, Levittown schools Superintendent Todd Winch said in a message to parents. But officials alerted Nassau police, he added, and they are investigating.

With Nicholas Grasso