KUALA LUMPUR, MALAYSIA: Datuk Seri Anwar Ibrahim's defence team will produce at least five witnesses claiming they were with the PKR de facto leader at the material time of the unnatural sex charge.

"We have a water-tight alibi. In fact, we told the police about the alibi on July 10 at the police station. The police had also investigated and taken statements from all the witnesses that we named," said Sankara Nair, one of Anwar's counsel.

He added the defence team was perplexed about why the police insisted on wanting to charge Anwar although alibi and witnesses had been produced.

Sankara claimed it was a frivolous and unnecessary charge which was politically motivated.

"There were people around him at the material time. Datuk Seri Anwar had said he was there at the condominium, but he had people around him because they were having a meeting," Sankara told reporters outside the Sessions Court after Anwar was charged with committing consensual unnatural sex with his former aide Mohd Saiful Bukhari Azlan.

Saiful had on June 28 lodged a report against Anwar for sodomy.

He added that the medical report from Hospital Pusrawi - which allegedly found no medical indication that Saiful had been sodomised - was also strong supporting evidence.

Asked if the defence team was prepared if the prosecution piled on additional charges later, Sankara said the possibility was open because "there is a very powerful machinery out there."

However, he said the charges would normally be filed together.