Emergency services are responding to an incident on Te Ngae Rd in Rotorua.
A police media spokeswoman said police were called to the incident at Damar Industries Limited by Fire and Emergency New Zealand.
A spokesman from the company said the incident was a medical event.
A St John media spokesman said one person was taken in moderate condition to Rotorua Hospital by ambulance.
She said it was not suspicious and the road was not blocked.
