Delphi murderer Richard Allen, who was convicted in the savage 2017 killings of Indiana teens Abigail Williams and Liberty German, was sentenced to 130 years in prison — the maximum sentence — on Friday.

Allen, 52, was found guilty last month of murdering both eighth graders, ages 13 and 14  — nearly eight years after their bodies were found with their throats slit near an Indiana hiking trail.

Judge Frances C. Gull told Allen at the sentencing hearing that the brutal slayings rank “right up there with the most hideous crimes,” NBC News reported.

“These families will deal with your carnage forever,” the judge said.

The former drugstore clerk encountered the girls, who were close friends, on the Monon High Bridge Trail just outside of Delphi in February 2017.

Allen forced the pair at gunpoint off the trail and threatened to rape them — but changed his plans when a van passed by, prosecutors said.

He then forced them down the bottom of a hill and cut open their necks about a quarter mile from the trail, where they were found the following day.

The jury was shown chilling Snapchat footage recorded by one of the girls showing a man, who could be heard telling them, “Down the hill.”

The grisly murders rocked Delphi, Indiana, a tiny city of just 3,000 people located 70 miles northwest of Indianapolis.

The girls’ killings went unsolved until October 2022 when Allen was arrested.

Allen was convicted by a nine-person jury on Nov. 11 on two counts of murder and two counts of murder while committing kidnapping after roughly 19 hours of deliberations.

His attorneys say they plan to appeal the verdict.

“Richard Allen maintains his innocence,” they wrote in a sentencing memo ahead of Friday’s sentencing, NBC News reported.

While locked up in prison, Allen repeatedly confessed to murdering the teenagers in calls to his wife, in person and in writing.

“I did it. I killed Abby and Libby,” Allen, 52, said in one of many conversations played for the jury during the four-week trial.

When his wife, Kathy, said he couldn’t have done it, Allen confirms, “Yes, I did.”

Despite his confessions — which he also made to prison guards and a psychologist — Allen’s defense team argued he may have begun to lose his mind after 13 months of solitary confinement and that his claims were false.

While in solitary confinement, the killer smashed his head against cell walls, bathed in his toilet, ate paper, and covered his face and cell walls in feces, prison guards testified.