Nine Newport pupils taken to hospital after taking substance
One pupil remains in hospital after nine were taken for checks after reportedly taking an unknown substance.
The students began "feeling unwell" at Llanwern High School, in Newport, at about 11.40 BST on Thursday.
A 14-year-old girl, five girls aged 13, two girls aged 12 and an 11-year-old boy were taken to Royal Gwent Hospital.
Gwent Police said some did not require treatment but were taken as a precaution. Eight of the nine have now been discharged.
Officers said inquiries were ongoing to find out the exact circumstances of what happened, what the substance was and where it was obtained.
The Welsh Ambulance Service sent three rapid response cars, three emergency ambulances and an urgent care service vehicle to the school.
A council spokesman said: "Our immediate priority is the well-being of the pupils affected.
"The school will be carrying out an investigation and will be working with the police into how this incident happened."