OAKLAND — A plea deal between the federal government and a disgraced child psychologist appears to be falling apart, in light of new allegations that he continued to view graphic images of kids while awaiting trial on similar charges.

This development is the latest twist in the shocking case of Kenneth Breslin, 69, a child psychologist who was running a private practice in Orinda called A Child’s Point of View, until authorities raided his home last year and found a trove of child porn, according to court records. He was indicted last December, and bailed out of jail within days.

Since then, things have been going from bad to worse for Breslin. In April federal authorities caught him using the internet — a violation of a signed court order — and uncovered evidence that he was using various encryption techniques to surreptitiously download child pornography. And now, U.S. attorneys say they may soon have enough evidence to file new criminal charges.

In September, Breslin agreed to take a plea deal, deposit $100,000 into a bank account for victim restitution, and to accept a sentence that to this day has not been publicly disclosed. That was supposed to happen in late October, but prosecutors have delayed multiple times, saying they are working to build a new case against Breslin.

In the past few weeks, investigators have served multiple search warrants, conducted interviews with the National Center for Missing and Exploited Children, and are getting close to accessing an encrypted drive they recovered in September, according to court records. Last week, they spelled out the new allegations against Breslin in a court hearing, but a transcript has not been made available.

In April, a judge said Breslin had committed “the most flagrant” bail violation she’d ever seen, when he used a third-party server to hide his internet activity and emailed himself several links to files with names that contained slogans associated with child porn.

A federal investigator called Breslin’s activity “suspicious,” but couldn’t access the files and prove whether they were illegal. U.S. District Judge Jacqueline Scott Corley initially let Breslin remain out of custody, saying he had a “disease,” but then remanded him to a halfway house in May.

Breslin’s next court date has been scheduled for Feb. 8. His attorney did not immediately return requests for comment.