TECUMSEH, Neb. (AP) - A jury has convicted a Nebraska inmate of assault by a confined person for an attack on a prison guard during a riot at the Tecumseh State Correctional Institution last year.

The Lincoln Journal Star reports  that the Johnson County jury convicted 60-year-old Roger Weikle on Tuesday after deliberating about 50 minutes following closing arguments.

Weikle faces sentencing in October.

He already is serving a sentence of up to 218 years for first-degree murder and a number of other charges. He is currently serving that sentence at the Nebraska State Penitentiary in Lincoln.