Shaleen Ungricht, a 47-year-old resident of Rock Springs, Wyoming, has been sentenced to 140 months in prison followed by four years of supervised release for distributing methamphetamine. According to court documents, the Wyoming Division of Criminal Investigation identified Ungricht as a distributor handling multiple pounds of methamphetamine in Southwest Wyoming. Beginning in March 2024, law enforcement conducted six controlled purchases from Ungricht totaling over 600 grams. At her arrest in January 2025, authorities found additional quantities on her person and at her residence. The investigation was led by the Wyoming DCI and the Drug Enforcement Administration, with prosecution by Assistant U.S. Attorney Z. Seth Griswold. Judge Scott W. Skavdahl handed down the sentence on November 19 in Cheyenne.
In another case, Jose Bradley Isaacson, age 22 from Smithfield, Utah, received a sentence of 36 months’ imprisonment and three years of supervised release for interstate stalking. Court records state that after a relationship ended with the victim—who was working in Yellowstone National Park—Isaacson made repeated attempts to contact and threaten her. On June 21 he traveled to Old Faithful Village to confront her physically; when she refused to leave with him he fled the area. The following day he stole a rental car and attempted to evade law enforcement before being apprehended by Grand Teton Park Rangers using tire deflation devices and a foot pursuit. National Park Rangers investigated the incident; Assistant U.S. Attorney Kerry Jacobson prosecuted the case before Judge Alan B. Johnson on November 21.
Corey Thacker, aged 37 with no permanent address, was sentenced to 70 months’ imprisonment plus three years of supervised release for possession with intent to distribute methamphetamine and use of a firearm during a drug trafficking crime. On February 3, Cheyenne Police detectives stopped Thacker and discovered suspected fentanyl pills and methamphetamine along with packaging materials and cash; he also carried a loaded handgun which he admitted was for protection related to his drug activities. The Cheyenne Police Department and DEA investigated this case; Assistant U.S. Attorney Paige Hammer prosecuted it before Chief Judge Kelly H. Rankin on November 7.
Mario Cisneros-Tenorio, age 40 from Serrano, Guanajuato, Mexico was sentenced to time served plus up to ten days pending deportation proceedings after being convicted for illegal reentry into the United States following previous deportation in April 2016. He came into contact with law enforcement at Sweetwater County jail after an arrest for driving under the influence; Immigration and Customs Enforcement determined that he had not sought permission to return legally since his removal from the country.
The United States Attorney’s Office represents federal interests in litigation within Wyoming’s district courts—including criminal prosecutions for violations of federal law—and is involved in community safety programs such as Project Safe Childhood (which addresses technology-facilitated sexual exploitation crimes against children) and Operation Take Back America (targeting illegal immigration and organized crime). The office also operates a Victim Witness Program aimed at ensuring victims are treated fairly throughout federal proceedings.
To report federal crimes or provide tips about suspicious activity involving potential violations of federal law within Wyoming or elsewhere across the United States visit https://www.justice.gov/actioncenter/report-crime.
