Authorities in northeastern Indiana say a 27-year-old maintenance worker was killed when he fell 100 feet from the roof of a building and his safety harness failed. 

The DeKalb County Sheriff's Department says the accident happened about 9 a.m. Tuesday in Butler. 

Detective Adam Friedel tells The Journal Gazette of Fort Wayne that David W. Gingery of Garrett was cleaning a roof atSteel Dynamics in Butler when the structure collapsed. 

Friedel says a safety cable snapped under Gingery's weight and he fell to his death. He worked for the Power Clean company. 

Company spokesman Fred Warner says Steel Dynamics is investigating the death. 

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Information from: The Journal Gazette,http://www.journalgazette.net 

AP-WF-05-17-11 2138GMT