Medical evidence at the trial of the former Malaysian deputy prime minister, Anwar Ibrahim, has contradicted prosecution allegations that he'd recently had intimate sexual relations with his adopted brother.

Mr Anwar is facing charges of corruption and sexual misconduct.

A prosecution medical expert told the court in Kuala Lumpur that, after examining Mr Anwar's adopted brother, Sukhma Darmawan, he had concluded that the man had had no homosexual intercourse -- at least in the past five years.

Mr Sukhma was jailed in September, charged with having had sex with Mr Anwar early this year.

He's appealing against the conviction, alleging the police forced a confession from him.