ANSONIA, Conn. (WTNH) — Three students have now been charged through a police investigation of a social media threat that led Ansonia High School to lockdown Monday morning.

Ansonia police said the department’s school resource officer at the high school was notified of the online threat at 11 a.m. Monday. The school was placed into lockdown and students were dismissed safely from the school, according to police.

On Monday, police said a suspect, a 14-year-old male student, was charged with threatening in the first degree and breach of peace in the second degree. He was referred to juvenile authorities, police said, adding this was an isolated incident.

Police said Tuesday that two more students were arrested after investigation revealed additional threatening messages and the involved students each allegedly admitted to their involvement with the messages.

A 16-year-old male student and a 14-year-old female student were each charged with threatening in the first degree and breach of peace in the second degree. They were both referred to juvenile authorities, police said.

 “Ansonia Public Schools in collaboration with the Ansonia Police Department will not tolerate any behaviors/actions that put our students, staff, and community at risk,” said Ansonia Superintendent Dr. Joseph DiBacco in a statement Monday.

The Ansonia Police Department is urging parents to speak to their children about the effect their actions can have on not only themselves but the people around them. They are encouraging parents to monitor what their children are doing online.