BALTIMORE — A federal judge approved Baltimore State’s Attorney Marilyn Mosby’s request to postpone her criminal trial, setting a new date in September.

After a teleconference with Mosby’s defense lawyers and federal prosecutors Tuesday morning, U.S. District Judge Lydia Kay Griggsby scheduled the trial for Sept. 19. It’s unclear how many days Griggsby set aside for the trial, but prosecutors said in a February status report they anticipated trying the case in four days.