INDIANAPOLIS (January 23, 2013) -- The NCAA's latest scandal comes from inside its own walls.

The NCAA said Wednesday it had botched the investigation into allegations against the University of Miami by conducting depositions in the presence of an attorney for former Hurricanes booster Nevin Shapiro during bankruptcy proceedings.

NCAA President Mark Emmert says former enforcement staff members worked with the criminal defense attorney for former Miami booster and convicted Ponzi scheme architect Nevin Shapiro "to improperly obtain information ... through a bankruptcy proceeding that did not involve the NCAA."

NCAA President Mark Emmert says some of the people involved are no longer working for the NCAA.

The NCAA said it has found "a very severe issue of improper conduct" committed by former members of its own enforcement program during the Miami investigation, and will not deliver the long-awaited notice of allegations against the Hurricanes until an external review is completed.

Miami President Donna Shalala has released a statement saying she is "frustrated, disappointed and concerned" that the NCAA's investigation into the Hurricanes' athletic department may have been compromised.

Shalala says Miami will continue to work with the NCAA and hopes for "a swift resolution."

The announcement was an embarrassing one for the NCAA, which has faced sharp criticism and has since been sued over the $60 million in sanctions it levied against Penn State in the Jerry Sandusky scandal. It is also facing more than a half-dozen other lawsuits, including one in which a judge said NCAA investigators were "over the top" during the benefits case surrounding former Heisman Trophy winner Reggie Bush.