BEND, Ore. (AP) -- A 5-year-old Central Oregon boy was struck and killed by a large boulder while playing near a quarry.

Gabriel Brisbine of Sisters died at St. Charles Medical Center, where he taken by relatives after getting hit by the boulder Tuesday night.

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The Deschutes County Sheriff's Office says the boy and his 10-year-old brother were playing in an area where their relatives were conducting business. Gabe fell as he tried to climb down a rocky slope and the boulder struck him.

Sheriff's investigators declared the death an accident, but the district attorney's office will review it.