Police say they're investigating threatening graffiti scrawled on a bathroom wall at a New York high school as a bomb threat.
A student found the note on a tile wall in a boys bathroom at Nanuet Senior High School in Rockland County Friday afternoon, police said.
The message written in ink states: “When the third period bell rings, this school will blow up and everyone will remember 9-23."
Clarkstown police and school district officials said additional officers are being stationed at the school.
In a statement, superintendent Mark McNeill said "the district takes all threats seriously and considers this a punishable offense."
Police searched the area Friday but didn’t find anything suspicious.
Still, some parents are alarmed by the threat and were considering keeping their children home Monday.
"I'm very upset about this, and I'm worried for them," said mother Laurie Delbiondo.
Alison Lachiana said she had not decided whether she wanted to send her daughter to school.
"It depends on how scared she's going to be," she said. "I'm a little nervous, to tell you the truth."
Students said the police presence at the school Friday was reassuring.
"I'm kind of frightened about it, but they said a whole bunch of teachers and police officers scanned the bathroom, and on Monday, they said there's going to be a whole bunch of police officers in the alleys and bathrooms," said Joe Diaferia.