Two boys have been charged after the Garden Hill First Nation band office was set ablaze on Monday.
An Island Lake RCMP officer spotted the flames just before 10:30 a.m. shooting out of the unoccupied office, which was under construction at the time.
He heard voices in the burning building and entered through a window. One youth was found, while another was able to make it out safely. No one was injured.
Two boys, aged 12 and 13, were arrested and charged with arson.
Police are continuing to investigate.