Updated - Eight schoolchildren were hospitalised this morning after being taken ill while on their school bus in Cospicua. They are due to be discharged this afternoon.
They were rushed to hospital in ambulances while other children were assisted on site.
The incident happened at about 9.30am soon after the boys - Year Five primary school pupils at De La Salle College - were leaving on a school outing.
The cause of the illnesses is believed to have been gas leakage from the school bus's air conditioner.