(NEWSER) - A 42-year-old pilot was killed in downtown Anchorage on Tuesday when the single-engine plane he was piloting clipped the building where his wife works, crashed into the building next door, and burst into flames. Officials say Doug Demarest, a volunteer with the national search-and-rescue agency Civil Air Patrol, was flying alone in a Cessna 172 when it swiped a six-story office building after 6am and lost a wing. Demarest's wife works at a law firm on the sixth floor; no one was in that part of the building at the time and no injuries were reported on the ground, reports the Alaska Dispatch News.

The FBI is investigating after unspecified evidence was uncovered, but a rep says officials don't believe the crash was related to terrorism. "Based on the very limited facts we have, we believe it was a personal tragedy," a rep for the law firm says.

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