Residents of the facility, which is operated by the Swedish Migration Board (Migrationsverket) were forced to evacuate the premises, but could later return.
“It seems as if someone poured flammable liquid in through the mail slot and then set it on fire,” said Thomas Ginghagen of the Örebro county police to the TT news agency.
The door caught fire, with flames ten spreading to an office shortly after 2am. The refugee facility, which is housed in the same building, was evacuated because of the heavy smoke.
The refugee centre is in the process of being emptied and the only current residents include a family and one more individual.
The building has been cordoned off in preparation for a forensic investigation.
The facility has been subject to several other small fires and vandalism in the past, according to Ginhagen.