A teenager is due to appear in court after a threatening email was sent to Bayfield High School this morning.
Police were alerted to the incident at 8.17am.
Around 550 students and staff from the college were escorted from the premises with assistance from Police.
At around 1.30pm this afternoon, Police executed a search warrant at a Dunedin property where the youth was arrested without incident.
"We understand incidents like this can be distressing, and we hope this arrest can provide reassurance to the community," says Detective Senior Sergeant Nik Leigh.
Police is providing those involved with support and will continue to investigate what has taken place.
A 16-year-old is due to appear in Dunedin Youth Court on Thursday 26 September, facing a charge of threatening to kill.
"Police is working with the school and further charges may be likely."
