Brown resigned from office before pleaded guilty to a fraud charge in June. (Haraz N. Ghanbari/AP)

U.S. District Judge Richard J. Leon scheduled a “Hearing on Violation” for Oct. 9.

Bill Miller, a spokesman for the U.S. Attorney’s office, declined comment. Brown’s attorney, Frederick D. Cooke Jr., was not immediately available for comment Wednesday.

It is unclear what sort of “violation” is alleged. After entering his guilty plea in June, Brown was released after agreeing to a number of conditions, including reporting weekly to court authorities and staying within the D.C. area unless a judge okayed other travel.

Under Brown’s plea agreement, prosecutors reserved the right to ask a judge to change his conditions of release if he violated those terms, if Brown “engaged in further criminal conduct” or if they learn new information suggesting Brown might flee or pose a danger to the community.

In August, Brown requested and was granted permission to travel to Fort Lauderdale, Fla., over the Labor Day holiday.

Brown is set to be sentenced on Nov. 13 on the fraud charge, as well as on a misdemeanor campaign finance violation pending in D.C. Superior Court.