Lawyers for Sean “Diddy” Combs are firing back at accusations that he is stonewalling his sex trafficking case from behind bars, claiming prosecutors improperly searched his cell and violated his right to attorney-client privilege.

Days after the government alleged that Combs tried to “undermine the integrity” of the case by contacting witnesses, his attorneys said it was the prosecutor who made serious mistakes — including making “notes to his attorneys” about possible process strategies.

“This search and seizure violates Mr. Combs’ (constitutional) rights,” wrote Diddy’s lead attorney Marc Agnifilo. “The targeted seizure of a pretrial detainee’s work product and privileged materials – made in preparation for trial – is outrageous government conduct that amounts to a substantial violation of due process.”

In the filing, Diddy’s attorneys ask Judge Arun Subramanian to immediately hold a hearing to investigate the search and seizures, saying they want to ask important questions about how the process evolved.

“Who authorized a search of Mr. Combs’ sleeping area, personal belongings and paperwork?” writes Agnifilo. “Who made the decision not to tell Mr. Combs’ counsel that the U.S. Attorney was in possession of his notes, including ‘potentially privileged material,’ until the government filed them to keep him in custody? ”

Combs, also known as Puff Daddy and P. Diddy, was once one of the most powerful men in the music industry. But in September, federal prosecutors indicted him on charges of racketeering and sex trafficking for what they said was an elaborate criminal operation aimed at satisfying his need for “sexual gratification.” If convicted on all charges, he faces up to life in prison.

On Friday, prosecutors made serious new allegations. In response to Combs’ latest attempt to be released on bail, they said such an action would still pose a high risk of obstruction of justice; In doing so, they accused Diddy of trying to reach witnesses, leaking favorable material and orchestrating “social media campaigns” to influence public opinion and taint the jury pool.

“Defendant has continued to engage in a relentless course of obstructive behavior designed to undermine the integrity of this proceeding,” the prosecutor wrote in the file.

In the filing, prosecutors noted that some of their evidence came from notes recovered from Diddy’s cell during what they called “a pre-planned nationwide sweep of the BOP facilities.” The check turned up “potentially privileged material,” but prosecutors said the evidence was screened by a so-called filtering team to avoid inappropriate material.

Attorney-client privilege exists to protect a suspect’s right to an effective defense from his attorneys. It is designed to allow a defendant to be honest with their legal team, without having to worry that such material could later be used against them.

In Monday’s response, Combs’ attorneys said some of the materials recovered from his cell were “absolutely privileged” and should not have been turned over to government attorneys, who are not allowed to see them. They include “privileged notes to his attorneys regarding defense witnesses and defense strategies.”

“This is a matter of great concern that must be addressed immediately, with all due respect,” Agnifilo wrote. “Because the U.S. Attorney’s Office, and it appears that the trial prosecutors, are currently in possession of privileged material, we request a full evidentiary hearing as soon as the Court can accommodate us.”