The 53-year-old had pleaded guilty in May to sending explicit photographs and messages to a 15-year-old high school student last year.
It remains unclear, however, whether investigators can finish their work before election day, the New York Times reported.
The sex scandal that forced New York Representative Anthony Weiner from Congress last week capped a season of dishonour for male politicians.
Porn mogul Larry Flynt offered disgraced US lawmaker Anthony Weiner a job, after the New York congressman resigned over a tawdry "sexting" scandal.
US lawmaker Anthony Weiner has resigned after being embroiled for weeks in a sex scandal linked to his lewd online exchanges with women.
President Barack Obama ramped up pressure on Monday on congressman Anthony Weiner to step down, calling his internet sex scandal a distraction.
US Democratic Representative Anthony Weiner defied calls on Saturday from party leaders to resign and said he would instead seek treatment.
A prominent Democratic lawmaker’s once promising career was in danger on Tuesday after he acknowledged sending a lewd photo to a woman over Twitter.
Pressure is building on New York congressman Anthony Weiner, who openly wept amid stunning admissions he lied about extramarital phone sex.