A Texan couple have been sentenced to 60 years each in federal prison for sexually assaulting at least 25 children and were deemed 'the most wicked criminals in Texas history'.

Parents-of-five Christopher Almaguer and Sarah Rashelle Almaguer, both 27, pleaded guilty to one count of sexual exploitation of children and one count of production of child pornography, according to a press release from the Western District of Texas.

Christopher Almaguer's brother, 25-year-old Paul Perez Jr, was also sentenced to 20 years in federal prison after he pleaded guilty to two counts of receipt of child pornography.

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Christopher Almaguer and Sarah Rashelle Almaguer, both 27, pleaded guilty to once count of sexual exploitation of children and one count of production of child pornography

Video courtesy of FOX44 News

United States district judge Alan D Albright also ordered that each of the defendants pay $10,000 restitution to the Justice for Victims of Trafficking Fund and be placed on supervised release for the remainder of their lives.

'To me this is the most significant case we've prosecuted since I became U.S. attorney,' stated U.S. attorney John F Bash.

Christopher Almaguer's brother, 25-year-old Paul Perez Jr, was also sentenced to 20 years in federal prison after he pleaded guilty to two counts of receipt of child pornography.

'The Almaguers were serial child abusers. They abused 25 children that we know about - children from the neighborhood, children from church, children they babysat.

'The youngest victim was an infant. And the nature of the abuse was unimaginable. They also made videos of the children's torture and shared them. These are two of the most wicked criminals in Texas history.'

The Almaguers admitted that in December 2017, they uploaded sexually explicit videos of themselves sexually assaulting the children as young as eight months old.

Bash described that Christopher raped an infant girl while his wife penetrated an infant girl with a sharpie pen.

Perez admitted to receiving the images and videos from the couple that depicted the abuse of the children. He is said to have requested his brother sexually assault a five-year-old girl while telling her to say 'hi, Paul.'

According to court records, investigators were able to come up with a list of approximately 25 potential minor child victims, all coming from the Central Texas area. The Waco Tribune reports that 13 of the victims have been identified.

The Almaguers admitted that in December 2017, they uploaded sexually explicit videos of themselves sexually assaulting the children as young as eight months old

All three defendants have been in police custody since their arrests in February and March 2018.

The arrests were part of a joint investigation between the Texas Office of the Attorney General, Criminal Investigations Division, Child Exploitation Unit, the United States Secret Service, KIlleen Police Department and the Temple Police Department.

The investigation was launched in February 2018 when Facebook notified the National Center for Missing and Exploited Children (NCMEC) that a user was uploading images and videos depicting child pornography.

The couple apologized for their actions and said that they turned their lives over to God, and also offered to be better parents to their five children.