TOPEKA — A Kansas inmate has pleaded guilty to stabbing and injuring a corrections officer.

Twenty-seven-year-old Allen Thomas Schroeder Jr. pleaded guilty Monday to second-degree attempted murder and conspiracy to commit second-degree attempted murder in the April attack on Shawnee County corrections officer Lacy Noll.

She alleges Schroeder became angry after she threatened to write him up for screaming and inciting a riot. Witnesses testify that Schroeder sharpened a broken drawer handle to stab Noll. She says she was struck on her face, back and shoulder.

Sentencing is set for March 7. As part of a plea agreement, prosecutors will recommend a sentence of 25 years, to be served after his current 16-month sentence for an unrelated attempted aggravated battery case.