A Sunday evening fire at Tilst School near Aarhus was deliberately set, according to East Jutland Police.
“What we know now is that a window pane shattered and a liquid was most probably poured into a room and set on fire,” Klaus Møller from East Jutland Police told TV2.
Møller said that the fire was quickly extinguished and that there were no injuries.
Ten classrooms suffered serious smoke damage.
“The fire was fully engaged when we arrived, but we put it out quickly,” said Bjørn Christensen from the East Jutland Fire Department.