(Portland, OR) -- Investigators say a fire that caused major damage to the Elephant's Delicatessen in Northwest Portland was human caused. Arriving firefighters said it appeared the fire started on the outside and went into the attic. The building's construction made the fire difficult to put out. No injuries were reported. Surveillance pictures of a person outside of the building wearing a blanket have been released. Investigators are asking for tips to help identify the person.