Anthony D. Weiner, the former Democratic congressman whose sexting scandals ended his political career and embroiled him in a tumultuous F.B.I. investigation of Hillary Clinton before the election, is to appear in a federal courtroom in Manhattan on Friday to enter a guilty plea.
The information has not been made public but was related by two people who have been briefed on the matter and asked not to be identified.
Mr. Weiner will plead guilty to a single charge of transferring obscene material to a minor, pursuant to a plea agreement with the United States attorneys office in Manhattan, one of the people said. Mr. Weiner surrendered to the F.B.I. early Friday morning.
The federal authorities have been investigating reports that, beginning in January 2016, Mr. Weiner, then 51, exchanged sexually explicit messages with a 15-year-old girl in North Carolina.
The plea covers conduct by Mr. Weiner from January through March of last year, the person said. A likely result of the plea is that Mr. Weiner would end up as a registered sex offender, although a final determination has yet to be made, the person added.
The charge carries a potential sentence of zero to 10 years in prison, meaning that Mr. Weiner could avoid prison. The ultimate sentence would be determined by a judge.
