Mexican National Sentenced for Unlawfully Residing in Catoosa After Previous Deportation for Killing his 38-Day-Old Baby

TULSA, Okla. – A Mexican national who was found residing in Catoosa and was previously deported after killing his son was sentenced today for Unlawful Reentry of a Removed Alien, announced U.S. Attorney Clint Johnson.

U.S. District Judge Gregory K. Frizzell sentenced Carlos Ambriz-Estrada, 53, to 24 months imprisonment, followed by three years of supervised release. He is expected to face removal proceedings following the sentence.

In March 2025, the Fugitive Operations Team with Immigration Customs Enforcement began investigating Ambriz-Estrada due to his prior conviction of deliberate homicide in Montana and the possibility of him being present in the United States unlawfully. He was arrested in April 2025 after law enforcement discovered that he was unlawfully living in Catoosa and that he did not have permission to re-enter the United States after being removed.

Court records show that in 1994, Montana law enforcement was dispatched to the hospital to investigate apparent child abuse. Ambriz-Estrada and his wife brought their 36-day-old baby to the hospital for treatment. The detective spoke with a doctor who confirmed that the baby had five broken ribs, detached retinas in both eyes, swelling of the head, bruises on the neck and abdomen, consistent with strangulation. The doctor reported that they believed the baby was strangled and without oxygen for some time, likely causing severe brain damage.

When being interviewed, Ambriz-Estrada admitted that he was angry with his wife and took it out on the baby. While the baby was crying, he squeezed the child’s throat for 15 to 20 minutes, until the baby lost consciousness. Afterward, he put the baby in a crib. The baby woke up crying one hour later, and Ambriz-Estrada admitted to picking up the baby and shaking him. Ambriz-Estrada told detectives the baby's breathing was irregular and appeared to have a seizure.

After two days in intensive care, the baby had no brain activity and was declared brain dead at 38 days old.

After pleading guilty to deliberate homicide, Ambriz-Estrada was ordered to 40 years imprisonment and served 12 years. After being released in 2006, Ambriz-Estrada was deported. After being deported, Ambriz-Estrada returned to the United States unlawfully sometime in 2020.

Ambriz-Estrada is expected to face removal proceedings following the sentence. He will remain in custody pending transfer to the U.S. Bureau of Prisons.

Homeland Security Investigations investigated the case. Assistant U.S. Attorneys Ammon Brisolara and Augustus Forster prosecuted the case.

This case is part of Operation Take Back America, a nationwide initiative that marshals the full resources of the Department of Justice to repel the invasion of illegal immigration, achieve the total elimination of cartels and transnational criminal organizations, and protect our communities from the perpetrators of violent crime.