An early morning fire at a vacant building on Northeast Second Street has Bend Fire and Police investigating the cause of the fire. Bend Police Officer Rob Emerson says they did find some evidence, but not enough to say with certainty that it was deliberately set, or if it's connected to previous fires recently set: "We don't have enough information at this point to connect them. We’re still kind of working through facts and evidence and see what we can come up with. Usually on purely accidental fires, we can determine the cause really quickly. And we haven't been able to do that, which is kind of why we're a little suspicious about it at this point." The fire burned mostly the outside of the building and caused some smoke and minor damage to the inside. The estimated loss is $50,000. If you have any information about this fire or any of the others, contact Bend Police at 541-693-6911.