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A 15-year-old boy is in custody and police are searching for another teen after two students were robbed at knifepoint in a hallway at Memorial High School in Sydney Mines.

Cape Breton Regional Police say two male students were walking down a hallway at the school Monday after noon when they were approached by two other students and a knife was pulled.

"Just held it up to his neck and said ‘give me all your money' and all his stuff and belongings and tried to rip off his chain," said student Kailea Morrison.

The students weren't injured in the incident.

Police were called to the school around 4 p.m. Monday and they arrested one of the suspects Tuesday.

"Police have arrested a 15-year-old male," confirmed Staff Sgt. Robert Walsh. "He's currently in custody and will appear in provincial court today, charged with armed robbery, uttering a threat and possession of a weapon dangerous to the public."

Students at Memorial High School reacted to the news with a mix of shock and disappointment. They say it's simply not right for someone to meet with such violence at school.

"Yeah, that actually does worry me, that people have knives in school because when you're in school, you're supposed to feel safe," said student Dekaisha Pero. "You're not supposed to be worried about ‘oh, I'm gonna get stabbed or jumped.'"

Some students are left asking if existing security is enough.

"I'm not exactly sure how it could be done, but I do know more should be done so people can't bring in weapons," said student Noah Reashore.

A spokesperson with the Cape Breton-Victoria Regional School Board says it is reviewing the incident and its own security measures.

Charles Sheppard says there are cameras in schools and Memorial High School already has a police presence in the halls. He also says the board considers the incident to be an isolated one and feels the schools are safe.

"We have upwards of 15,000 students and we can't be checking every student for objects that they may be bringing in," said Sheppard.

Students at Memorial say they just hope the incident doesn't reflect badly on their school.

"All I hope is it doesn't happen again because we're a good high school," said Reashore. "We don't deserve to have that reputation."

Police are now asking for the public's help in arresting a second suspect in connection with the incident.

With files from CTV Atlantic's Ryan MacDonald