(CNN) The mountain lion that attacked a boy in Colorado last week has been euthanized, wildlife officials said Monday.

DNA test results confirmed that one of two mountain lions euthanized last week was the mountain lion that attacked and seriously injured the 8-year-old, according to Colorado Parks and Wildlife.

The boy and his brother were playing outside on a trampoline Wednesday evening in Bailey, about 45 miles southwest of Denver, when the 8-year-old heard a friend calling him from a neighbor's house, the Colorado Parks & Wildlife said in a news release.

As he ran to visit the friend, he was attacked by the mountain lion and bitten on his head, according to wildlife officials.

Wildlife officers set a trap near the scene of the mountain lion attack in Bailey, Colo., Wednesday evening. A dog team was also used overnight trying to track down the mountain lion from the attack. Efforts are ongoing Thursday to locate the mountain lion. pic.twitter.com/OBWr2efQj2 — CPW NE Region (@CPW_NE) August 22, 2019

The boy's running likely triggered the animal's "natural response to a prey animal running," said Area Wildlife Manager Mark Lamb.

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