Anwar Ibrahim who was in the courtroom at the Palace of Justice was led away by policemen to serve his five-year jail sentence in Sungai Buloh prison.
In 2008, Anwar was charged for sodomizing his aide Saiful Bukhari Azlan but was acquitted by the High Court in 2012.
However, the Appeals Court overturned the acquittal in March last year and sentenced him to five years in jail after which he was again released on bail.
He has said the charges were trumped up to kill his political career.
Outside the court complex today, more than 1,000 supporters chanted Reformasi (Reformation) and were seen holding and waving the party’s flag after being told of the verdict.