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DENVER - A Denver woman was attacked by a man knocking at her door and claiming to be a with the fire department.

It happened Friday at 6:45 p.m. at a home in the 8500 block of East Alameda Avenue.

Police said the man told the victim he was with the fire department and that he was investigating a gas leak. As the victim opened the door the man forced his way into the victim's apartment and attacked the woman with either a box cutter or paint scraper.

The victim was able to fight off the attacker after a brief struggle. The man fled the location in an unknown direction.

The attacker is described as a black male in his early 30s. He is between 5 feet 6 inches to 5 feet 8 inches tall. He has a thin build with medium-length black hair in corn rows and a short goatee.

Anonymous tips can be submitted by calling Metro Denver Crime Stoppers at 720-913-STOP (7867) or by using the Metro Denver Crime Stoppers mobile app. All tipsters remain anonymous and are eligible for an award of up to $2,000.

The Metro Denver Crime Stoppers mobile app is immediately available as a free download on the App Store for Apple devices, on Google Play for Android devices and on the BlackBerry App World for select BlackBerry devices.