Dyfed Powys Police are investigating the death of a 14-year-old boy at Pembroke Comprehensive School this afternoon.
He was found hanged in a woodland area of the school after disappearing from his lunch break.
Dyfed-Powys Police said the boy's family have been informed as well as the coroner.
A police spokesperson said:
"Pembrokeshire Police have commenced enquiries into the circumstances surrounding the tragic death of a 14 year old boy which occurred in Pembroke Comprehensive School.
"Police school liaison officers have been working with the school to ensure the well being of the rest of the pupils."