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LOS ANGELES (CNS) - Attorneys representing plaintiffs in the Miramonte  sex abuse case plan to publicly reveal today what they allege was a cover-up by  the Los Angeles Unified School District, which they say destroyed records of  reported child abuse by teachers dating back to 1988.

The allegations are scheduled to be discussed at a news conference at  the headquarters of the Los Angeles Unified School District starting at 9:30 a.m.

Former Miramonte Elementary School teacher Mark Berndt pleaded no contest in November to 23 counts of lewd conduct involving his students and received a sentence of 25 years. Berndt, 63, was accused of spoon-feeding his semen to blind-folded students as part of what he is said to have called a tasting game.

Now, previously undisclosed accusations against Berndt reveal a more  widespread pattern of alleged abuse than previously attributed to him. The new accusations speak of more than 100 possible victims, including some children who said Berndt molested them, according to court documents cited by the Los Angeles Times.

The new allegations about Berndt are included in a 512-page report based on a two-year inquiry by the Los Angeles County Sheriff's Department, The Times reported. The report is confidential but was summarized by Los Angeles County Superior Court Judge John Shepard Wiley in a ruling during a pre-trial hearing this week.

These are the first public allegations that the veteran elementary teacher sexually abused students. Wiley indicated that Berndt touched them in a  sexual manner and exposed himself. According to the sheriff's report, he also urged students to touch him, Wiley said in comments.

Berndt's attorney Manny Medrano told The Times his client is not guilty of the broader abuse alleged in the sheriff's investigation.

The Miramonte scandal was the biggest child abuse case in the history of the school district. Following Berndt's arrest on lewd conduct charges in 2012, Superintendent John Deasy closed the campus for two days and reopened it with an entirely new staff. The district has paid about $30 million in settlements to 63 children and their families.