A Louisiana inmate escaped from prison — then kidnapped and killed an assistant warden’s step-daughter, according to reports Friday.

Deltra Henderson, 39, escaped from David Wade Correctional Center on Thursday afternoon, then abducted 19-year-old Amanda Leigh Carney, who lived on the prison grounds with her family, including her assistant-warden stepdad, James Arnold, according to KSLA.

He then crashed a stolen car — where cops later found Carney’s body stabbed to death inside, KTBS reports.

Henderson then stole another vehicle and crashed that before holing himself inside a home on the prison property, where he died in a shoot-out with police.

The felon had been serving time for attempted armed robbery, aggravated burglary and cocaine distribution since 2001 and wasn’t due to get out until at least 2025.