Tohono O’odham man indicted on charges related to alleged sex crimes involving minor

Timothy Courchaine United States Attorney for the District of Arizona
Timothy Courchaine United States Attorney for the District of Arizona - U.S. Attorney for the District of Arizona
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A federal grand jury in Tucson has indicted Allman Rivas, 36, of Menagers Dam on the Tohono O’odham Nation, on four charges related to alleged crimes involving a minor. The indictment includes counts of Attempted Coercion and Enticement, Transfer of Obscene Material to Minors, Attempted Sex Trafficking of a Minor by Force, Fraud, or Coercion, and Sexual Extortion.

According to court documents, between June 26 and July 19, 2025, Rivas allegedly sent multiple Facebook messages to a minor with the intent to lure her to his residence for sexual encounters. He is accused of sending explicit photographs and offering financial incentives in exchange for sexual acts. When the minor refused further contact, Rivas reportedly threatened her in an attempt to force compliance. Authorities state that Rivas is an enrolled member of the Tohono O’odham Indian Nation.

If convicted of Attempted Coercion and Enticement, Rivas faces a mandatory minimum sentence of 10 years in prison and up to life imprisonment. The charge of Transfer of Obscene Material to Minors carries a maximum penalty of 10 years. Attempted Sex Trafficking of a Minor by Force, Fraud, or Coercion holds a mandatory minimum sentence of 15 years and up to life in prison. Sexual Extortion is punishable by five to fifteen years in prison. Each conviction could also result in fines up to $250,000.

“Protecting our youth from sexual offenders is one of the highest priorities of this office,” said United States Attorney Timothy Courchaine. “These crimes are among the most serious we prosecute because they target the most vulnerable members of our community. Working closely with our law enforcement partners, we will continue to aggressively investigate and prosecute those who attempt to exploit children.”

“Safeguarding all children from violence, coercion and exploitation is a top priority for the FBI,” said FBI Phoenix Special Agent in Charge Heith Janke. “The FBI will continue to work with our federal, state, local, tribal, and law enforcement partners to identify, prioritize and investigate anyone who seeks to harm the most vulnerable among us.”

The investigation was conducted by the Tohono O’odham Police Department along with the FBI Phoenix Division’s Tucson office. Assistant United States Attorneys Nathaniel J. Walters and Alessandra C. Bermudez are prosecuting the case.

Officials emphasized that an indictment is only an allegation; all defendants are presumed innocent unless proven guilty beyond a reasonable doubt in court.



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