Among the highlights are transcripts of tapes secretively made by Pentagon worker Linda Tripp of her conversations with Monica Lewinsky.

Also released is the testimony of Mr Clinton's personal secretary, Betty Currie, and his friend and confidant, Vernon Jordan.

Dick Morris: Evidence included

Leaked reports also point to controversial statements from Mr Clinton's former adviser Dick Morris and the White House adviser Sidney Blumenthal.

Around 4,000 pages are being made public in phase three of the release of evidence, sanctioned by the House of Representatives Judiciary Committee.

The documents also include the sworn testimonies to the Grand Jury of other high-level Clinton aides, associates and Secret Service agents.

The new batch will help complete the jigsaw of evidence amassed by Mr Starr, the Independent Counsel, in his investigation of President Clinton's affair with Monica Lewinsky.

Mr Starr alleges 11 impeachable offences by the president. The House Judiciary Committee is expected to vote on Monday or Tuesday to recommend an impeachment inquiry. This will go to the full House for ratification.

The atmosphere in Washington is in stark contrast to that before the last issue of evidence, which included a video of Mr Clinton's Grand Jury testimony and transcripts of Ms Lewinsky's evidence to the Grand Jury.

Republicans, who appeared to suffer a public backlash after the video was broadcast, have this time tried to play down the likely impact of the new statements.

The material could be key to any congressional inquiry since the documents relate to questions of possible witness tampering and obstruction of justice.

It is thought to back up claims that Mr Clinton encouraged Ms Currie to lie under oath and that he used his friend, Mr Jordan, to help find Ms Lewinsky a job.

Transcripts of the Tripp tapes will give a further insight into relations between Ms Lewinsky and Mr Clinton.

The transcripts, which have been edited to protect third parties, detail more than 20 hours of conversations between Ms Lewinsky and Ms Tripp, who befriended the intern when she came to work at the Pentagon.

The tapes were subsequently turned over to Mr Star, who then embarked on an investigation into the Lewinsky affair.

Edited versions of the tapes themselves are expected to be made public next week.

Intimidation

Leaked reports reveal that Mr Morris testified that presidential allies had mounted a "secret operation to go around and intimidate women" who may have been involved with the president.

Mr Morris has told the press this was not based on first-hand information.