PITTSBURGH — A former gymnastics coach from Clinton Township pleaded guilty Monday in Allegheny County to three counts related to sexual abuse against minors in exchange for a lesser sentence, and is scheduled to appear Wednesday in Butler County to face related crimes there.

Keith R. Callen, 48, of Sarver pleaded guilty before Allegheny County Common Pleas Judge Jill E. Rangos to one count each of aggravated indecent assault, sexual assault by a sports official, unlawful contact and corruption of minors. In exchange for Callen's plea, the district attorney's office agreed to a sentence of two to four years in state prison, five years of probation and a lifetime registration as a sex offender.

A separate trial for Callen is scheduled to begin Wednesday with jury selection beginning at 9 a.m. in the courtroom of Judge William Shaffer.

Callen had originally been found guilty in Allegheny County in March 2017 of sexually abusing three girls and was sentenced to 13 to 26 years in prison. His convictions were later reversed by the state Superior Court because he was tried in Allegheny County instead of Butler County, where some of his crimes were alleged to have been committed.

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