Former prosecutor Katherine Dierdorf resigned after the incident, along with Worrell. Dierdorf has not been charged. Her lawyer, Jeff Jensen, has said she had not been aware of the charges filed against Waller and assisted in the investigation.

In documents, prosecutors accuse Carroll of a pattern of “questionable behavior.” They say he allowed Worrell to chase a suspect, with a Taser, in one incident, and to seize drugs in another.

They also say that in phone calls from jail, Carroll blamed supervisors for failing to keep him away from Waller, and prosecutors for failing to charge Waller in “some past, unknown crime, thereby ensuring his incarceration so (Waller) would not have been out of custody for the defendant to assault.”

They also say that Carroll has threatened to assault Assistant U.S. Attorney Fara Gold, although they acknowledged that that could be “hyperbolic.” Worrell said Carroll had a reputation for exaggeration.

EDITOR'S NOTE: Earlier versions of this story failed to mention that Ambry Schuessler is a former St. Louis prosecutor.

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