New Delhi, June 26 -- John Bolton, a former national security adviser for US President Donald Trump who has since become one of his fiercest critics, reportedly pleaded guilty in federal court on Friday to illegally retaining classified information.

Sources previously told Reuters that Bolton would plead guilty under a deal with prosecutors that included a sentencing range from no prison time to as many as five years behind bars, with the final sentence to be determined by a judge.

As part of the agreement, Bolton agreed to pay a $2.25 million fine.

According to the report, Bolton must make half that payment within five days of sentencing and the full payment within 90 days of sentencing.

He is scheduled to be sentenced on October 28 ...