The handling of the investigation was criticized after Litchfield County state attorney Frank S. Maco said in a press conference that he believed there was "probable cause" to charge Allen but decided against prosecution partly to avoid a traumatic trial for the young girl.
A disciplinary panel found that Maco may have prejudiced the ongoing custody battle between Allen and Mia Farrow by making an accusation without formal charges.
Months before Maco's press conference, a team of child abuse specialists from Yale-New Haven Hospital were brought in to the case and concluded that the child had not been molested. Maco, who retired in 2003, told the AP on Sunday that the statute of limitations on Dylan Farrow's accusations ran out at least 15 years ago.