A federal judge has dismissed charges filed against U.S. marshals over a dispute with another judge about their vaccination status, finding that while there was “impropriety” on the part of the marshals it did not rise to the level of criminal contempt.

U.S. District Judge Brian Buescher of the District of Nebraska was tapped to hear the case stemming from a conflict between U.S. District Judge Charles Kornmann of the District of South Dakota, who in May ordered a deputy U.S. marshal out of his courtroom after she wouldn’t say whether she was vaccinated. The marshals then removed all prisoners in their custody from the courthouse, a move that resulted in Kornmann starting criminal proceedings against the officials.