A young person is in custody after an incident between a student and a teacher sent a North Waikato secondary school into lockdown this morning.

The lockdown has since been lifted.

Just before 10am, Tuakau College posted a message on its website urging people to stay away from the school.

“Please DO NOT come to the school or phone the school,” it wrote.

Tuakau College said contacting the school could disrupt the management of the incident and put people’s safety at risk.

Counties Manukau Detective Inspector Shaun Vickers said the incident was between a student and a teacher.

A rural Tuakau secondary school has gone into lockdown following an incident. Photo / Supplied 

He said emergency services were called to the scene at 9.55am, after a person was reportedly injured.

“Upon arrival, a young person was quickly taken into custody,” Vickers said.

The victim has since been taken to hospital with minor injuries.

“We can reassure the wider community that the matter is contained and there is no wider risk to students or the wider public.”

Hato Hone St John said it sent an ambulance and a rapid response vehicle to the school around 10am.

“One person was assessed at the scene and has been transported to Middlemore Hospital in a serious condition,” a spokesperson said.

Emergency services are at the scene of an "incident" at Tuakau College. Photo / Payal Lal