Seventeen people were treated following a serious chemical incident at an industrial site in Magheralin overnight.
Five of those people were taken to hospital while 12 were examined and treated at the scene.
The conditions of those people in hospital are not believed to be life-threatening.
An emergency response was activated in the early hours with fire, police and ambulance crews despatched to the scene, alongside the Hazardous Area Response Team.
Residents are being urged to avoid the area this morning (Saturday), however, there is no wider threat as a result.
A spokesperson for the NI Ambulance Service (NIAS) said: “NIAS received reports of a potential chemical incident at an industrial site near Magheralin and dispatched a number of emergency ambulances, ambulance officers, a Hazardous Area Response Team and a doctor to the scene with a major incident being declared as a result of the number of reported casualties.
“Seventeen potential patients were assessed and five transferred to Craigavon Area Hospital, the Royal Victoria Hospital and Daisy Hill Hospital, though none are thought to be in a life-threatening condition.
“A further 12 patients were monitored and then discharged from the scene.
“NIAS worked alongside colleagues from NIFRS and PSNI to manage the incident.
“It is not believed that there is any wider risk to local residents as a result of the incident.”
