Police at Pembroke school after 'legal high' incident
Police are attending a school to offer support and reassurance after a group of pupils experimented with a "legal high".
Officers will also be carrying out further inquiries at Pembroke Comprehensive School after seven of the group fell unwell on Wednesday.
Police believe they experienced a poor reaction to the "psychoactive substance" they had taken.
Some pupils were taken to hospital as a precaution.
Most of the seven who were unwell are believed to be back at school.
A Dyfed-Powys Police spokesperson said: "Although the majority were taken to Withybush hospital as a precaution, none were admitted and soon returned to their parents.
"Officers will be visiting the school today to provide advice, support and reassurance, and conduct further inquiries."
Police said so-called legal highs frequently contained substances that were not legal and could not be assumed safe.
"These substances have not been properly tested to see how toxic they are to humans so there is no way of telling how a psychoactive drug will affect you," added the spokesperson.
A Pembrokeshire council spokesperson confirmed the pupils would face disciplinary action.