Pennsylvania’s highest court overturned Bill Cosby’s sex assault conviction Wednesday after finding an agreement with a previous prosecutor prevented him from being charged in the case.

Cosby has served more than two years of a three- to 10-year sentence at a state prison near Philadelphia. He had vowed to serve all 10 years rather than acknowledge any remorse over the 2004 encounter with accuser Andrea Constand.

The 83-year-old Cosby, who was once beloved as “America’s Dad,” was convicted of drugging and molesting the Temple University employee at his suburban estate.

He was charged in late 2015, when a prosecutor armed with newly unsealed evidence — Cosby’s damaging deposition from her lawsuit — arrested him days before the 12-year statute of limitations expired.

The trial judge had allowed just one other accuser to testify at Cosby’s first trial, when the jury deadlocked. However, he then allowed five other accusers to testify at the retrial about their experiences with Cosby in the 1980s.

The Pennsylvania Supreme Court said that testimony tainted the trial, even though a lower appeals court had found it appropriate to show a signature pattern of drugging and molesting women.

Cosby was the first celebrity tried and convicted in the #MeToo era, so the reversal could make prosecutors wary of calling other accusers in similar cases. The law on prior bad act testimony varies by state, though, and the ruling only holds sway in Pennsylvania.

Prosecutors did not immediately say if they would appeal or seek to try Cosby for a third time.

The justices voiced concern not just about sex assault cases, but what they saw as the judiciary’s increasing tendency to allow testimony that crosses the line into character attacks. The law allows the testimony only in limited cases, including to show a crime pattern so specific it serves to identify the perpetrator.

In New York, the judge presiding over last year’s trial of movie mogul Harvey Weinstein, whose case had sparked the explosion of the #MeToo movement in 2017, let four other accusers testify. Weinstein was convicted and sentenced to 23 years in prison. He is now facing separate charges in California.