PORTLAND, Ore. (KOIN) — An early-morning fire destroyed an unoccupied duplex and damaged two neighboring homes in southwest Portland.

The fire broke out at Southwest 6th Avenue and Sherman Street where responding firefighters arrived to find heavy fire in the basement and on the first floor of the duplex.

Crews say a damaged power line and a live wire partially blocking access made it difficult to get good positioning to battle the blaze.

As a result, flames reached two other nearby homes, resulting in significant damage. Neighbors were evacuated and placed in buses while firefighters worked to extinguish the fire. They were eventually allowed back in their homes several hours later.

The duplex was being remodeled and did not have anyone living in it at the time. No injuries were reported from the incident.

Portland Fire has asked for the public’s help while working to determine a cause. If anyone in the area has videos, pictures or any information, they are urged to call 503.823.4636.