ISABELLA, Minn. (AP) — Authorities say a black bear that attacked three people in northern Minnesota has been killed.

The Department of Natural Resources says the bear attacked two carpenters working on a cabin near Isabella Tuesday. The DNR says the bear attacked the first worker and when the second man tried to intervene he was bitten on the arm. KBJR-TV says both men made it to safety and called 911.

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Lake County Sheriff Carey Johnson says the same bear attacked a 68-year-old man a short time earlier in the same area after he tried to save his dog from the animal. The man drove himself to a hospital in Ely.

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Johnson says the bear was later tracked down and killed by officers. The DNR says bear attacks are unusual, especially this time of year when they should be hibernating.

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