Several Pembroke students were taken to hospital on Wednesday after becoming unwell, with police stating that the pupils may have reacted to a type of legal high. Shortly after 2 pm, the ambulance service informed Dyfed-Powys Police of an incident they were dealing with at Pembroke Comprehensive School, where a group of pupils had become unwell. "Officers attended the scene and established that a number of pupils were affected - some were treated at the scene and released, but others were conveyed to A and E in Withybush as a precaution," said a spokesperson for Dyfed-Powys Police. "Air ambulance also attended as a precaution. None is believed to be in a life-threatening condition. "Enquiries have commenced into the circumstances, but early indications are that the group may have reacted to a type of legal high." A Welsh Ambulance Service spokeswoman said some pupils were treated at the scene while seven pupils were taken to Withybush Hospital. "Though the cause is yet to be confirmed, it is believed the pupils may have reacted to an unknown substance," they explained. A spokesperson for Pembrokeshire County Council said the school has launched its own investigation into the incident.