JACKSON HOLE, WYO \u2013 Three men from Livingston, Montana, were sentenced last week for hunting and killing a mountain lion within Yellowstone National Park\u2014a violation of the Lacey Act. According to court documents, Austin Peterson, Trey Juhnke, and Corbin Simmons, crossed the park\u2019s marked boundary in the northern section of the park north of the Yellowstone River on December 12, 2018 in order to hunt mountain lions. Each hunter admitted to shooting the lion and transporting the carcass back to their vehicle. Simmons then falsely claimed to have harvested the animal north of the park boundary in Montana. This affected the state\u2019s quota system by denying a legal hunter the opportunity to legally harvest a lion. On Friday, May 3, 2019, Peterson, 20, was ordered to pay approximately $1,700 in restitution and fees, and must serve three years of unsupervised probation, during which time he is banned from hunting, fishing, or trapping worldwide. Juhnke, 20, and Simmons, 19, received similar sentences at hearings in April 2019. All three pleaded guilty to the charges at prior court hearings. \u201cI would like to express a sincere thank you to Montana Fish, Wildlife, and Parks, law enforcement officers at Yellowstone National Park, the National Park Service\u00a0Investigative Services Branch, and the US Attorney's Office - District of Wyoming for being involved in this case,\u201d said Yellowstone National Park Chief Ranger Pete Webster. \u201cTheir thorough work spotlighted this egregious act and the consequences incurred for hunting illegally in Yellowstone National Park.\u201d Under the\u00a0Lacey Act, it is unlawful to import, export, sell, acquire, or purchase fish, wildlife or plants that are taken, possessed, transported, or sold in violation of US or Indian law or in interstate or foreign commerce involving any fish, wildlife, or plants taken possessed or sold in violation of State or foreign law. Though seldom seen by the public, biologists estimate that 20-31 adult cougars reside year-round in the northern range (an average of 12-18 females and 8-13 males). These estimates are based on field surveys and statistical analyses conducted from 2014-2017. Biologists found higher estimates in the later years of the study. The numbers do not include kitten and sub-adult cougars which accompany a portion of the adult females each year. Monitoring efforts since 2017 suggest a stable population consistent with these estimates for previous years.