The police have identified two young people involved in a threat to Blenheim's Marlborough Girls' College.
The school was plunged into lockdown earlier on Thursday after threats were made against the school. It is not thought to be linked to earlier threats made to schools throughout New Zealand.
An earlier police statement said multiple units were in attendance at the college.
In an update, Tasman Area Commander Simon Feltham said they are speaking to two young people in relation to the incident.
"Police believe there is no further threat towards the public following an incident at Marlborough Girls High School," he said.
"Emergency services want to stress the negative impact hoax calls have on the community and on resources that may be needed to respond to other priority incidents."
The school's principal Mary-Jeanne Lynch posted on Facebook saying the threat has now been resolved.
"We are very pleased to inform you that the lockdown at MGC has been lifted. The police have identified two people and they are being dealt with. The threat to our school is now resolved," Lynch said.
As well as Marlborough Girls' College, other nearby schools went into lock down voluntarily.
"Please be aware that we have put the school into lockdown based on advice from the NZ police," Lynch said in a statement earlier on Thursday.
"Please remain outside of the police cordons."
Lynch said all students and staff were safe inside the school's building.
Earlier on Thursday, a police investigation was launched after multiple schools across New Zealand received "phone threats". However, police said it did not appear they were linked to Marlborough threats.
