ST. JOSEPH, Mo. (AP) — A man convicted in a northwest Missouri stabbing death has been charged with attempting to escape from prison.

The escape charge was filed this week against 25-year-old Sean Liechti, of St. Joseph.

The probable cause statement says Liechti and another man forcefully exited their cell at the Western Reception, Diagnostic and Correctional Center in St. Joseph on Dec. 30. They are accused of trying to assault a prison guard as they made their way into a recreation area, where they were captured.

Liechti and a Kansas woman pleaded guilty in October and another Missouri man in January to second-degree murder in the April 2015 death of Richard Berry. The 28-year-old’s body was found in the Third Fork of the Platte River near Easton.