Two schools in Northern Ireland were attacked by arsonists overnight.
A temporary building at De La Salle High School at Struell Road, Downpatrick, Co Down was damaged by fire. The building belonged to a contractor which was doing work on site.
Forensic experts are due to make a detailed examination of the fire.
Meanwhile, minor damage was caused to the Good Shepherd Secondary School at Poleglass on the outskirts of west Belfast.
A PSNI said that forensic tests had already been carried out at the school and the incident was being treated as arson.
Police have appealed for information about both attacks.
