A former aide to Mayor Vincent Gray’s 2010 mayoral campaign should be sentenced to probation, not prison time, because he “took full responsiblity for his crimes and provided substantial assistance to the government,” federal prosecutors wrote in court papers filed Monday.

Howard Brooks, 64, pleaded guilty in May to making a false statement to an FBI agent about his activities in the mayoral campaign, admitting that he was instructed to make illegal payments to a fringe candidate assailing then-Mayor Adrian Fenty (D).

Gray, then the D.C. Council chairman, beat Fenty in the 2010 Democratic primary and cruised to a general election victory.

Another campaign aide, Thomas W. Gore, 56, has pleaded guilty to obstruction of justice and three misdemeanor charges of making of a campaign contribution in the name of another in the scame scheme.

Gore and Brooks have admitted to carrying out a scheme that illegaly diverted campaign funds to fringe candidate Sulaimon Brown so he could continue attacking Fenty.

No sentencing date has been set for Gore.

It is not clear what “substantial cooperation” Brooks provided federal authorities. Prosecutors disclosed details of that help under seal, and a spokesman for the U.S. Attorney’s Office declined comment on the case.