The investigation into the cause of a fire that destroyed a synagogue in Duluth is ongoing. Firefighters responded to the blaze at the historic home of the Adas Israel congregation early Monday. Police Chief Mike Tusken says it is a challenging investigation.

Tusken says there’s new evidence in the case, but he can’t say what it is yet. Eight of 14 Torah scrolls stored in the synagogue were saved from the fire. A firefighter suffered minor injuries. Anyone with information on the fire can call an ATF tip line at 1-888-283-3473.