10:21 P.M. UPDATE:
The Allegheny County Medical Examiner's Office identified the victim as Michael Shiry, 34, of Avonmore, Westmoreland County.
A man is dead after an accident involving a tree trimmer in downtown Pittsburgh on Saturday.
Emergency crews were dispatched to the 400 block of Fort Duquesne Boulevard at One Gateway Center around 1:05 p.m., according to police.
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Officers found the victim lying next to an Emery Tree Service truck when they arrived.
Four workers were trimming trees when an an apparent mechanical failure on a bucket truck occurred, according to police.
Police said the victimr was thrown from the bucket of the truck to the ground.
Stay with Channel 11 News and WPXI.com for updates.