Portland police are seeking the public’s help in identifying a man riding a “uniquely colored” bicycle near the site of a large Northeast Portland fire that broke out early on the evening of Aug. 26 near Madison High and Glenhaven Park.

They believe the damaging four-alarm fire was set intentionally, and they called the man, shown in three images, “a person of interest” in the case.

The images of the man, wearing a cap, backpack and black t-shirt, don’t clearly show his face. But the bike, painted black with pinkish front fork and reddish chain stay, is quite distinctive.

Crime Stoppers of Oregon offers cash rewards of up to $2,500 cash for information, reported to that group, that leads to an arrest.

Police are seeking help finding clues to the identity of this man, seen biking near a former golfing range in Northeast Portland on the evening of Aug. 26. (Photo from Portland Police Bureau)

The fire quickly spread throughout an approximately four-acre area that was formerly a golf driving range, damaging area businesses and homes and destroying about 50 parked cars. It prompted the shutdown of electricity to about 12,000 homes.

The wind-driven blaze, which cropped up near 85th Avenue and Siskiyou Street, also destroyed two buildings and prompted a raft of evacuations.

-- Betsy Hammond; betsyhammond@oregonian.com; @OregonianPol