Three men are facing charges for illegally killing a black bear.

The Nevada Department of Wildlife says after a year-long investigation Daniel Rubio, Eliseo Rubio Sr. and Eliseo Rubio Jr. of Dayton are charged felony unlawful killing of a big game animal and gross misdemeanor possession of a big game animal.

They're also suspected of killing a mule deer.

“This was a lengthy and complicated investigation in which patience, persistence, and confidentiality were crucial to the eventual success,” said Nevada Department of Wildlife Chief Game Warden Tyler Turnipseed. “Key evidence in this case minimized our reliance on additional information from the public or offering rewards while investigating this case.” 

Witnesses to any wildlife-related crime are encouraged to report information to Operation Game Thief at (800) 992-3030.

(Nevada Department of Wildlife contributed to this report.)