The 70-year-old had been expected to attend the special tribunal for the first time on Thursday after failing to show up for two previous sessions due to security threats against him.

It was unclear whether he would come to court following his lawyers' walkout.

Musharraf's team says the allegations, which relate to his imposition of emergency rule in November 2007, are politically motivated and his lawyers have challenged the authority of the three-judge tribunal.

Anwar Mansoor Khan, one of the lawyers representing the former general, told the court he has been receiving threats and was unable to sleep the night before the hearing.

"I was under total threat... from 1:00 am to five in the morning. Someone was banging on my door and ringing my bell," Khan told the court.

When one of the judges asked who was threatening him, Khan answered: "This very government."

The court promised to investigate but Khan walked out of court, followed by other members of Musharraf's legal team.

"This never happened in my 40 years of practice. I will walk out," Khan said.

Sharifuddin Pirzada, another of Musharraf's lawyers, also complained that he had been threatened.

Khan told the court on Wednesday he had been attacked in his car while travelling to the eastern city of Lahore following an earlier hearing.

The treason allegations are the latest in a series of criminal cases faced by Musharraf since he returned to Pakistan in a thwarted bid to run in last May's general election.

Source: APP