Pakistan have threatened to withdraw from their forthcoming one-day series against England if captain Inzamam-ul-Haq receives a lengthy ban from Friday's disciplinary hearing withthe International Cricket Council.

The Pakistan captain has been summoned to a hearing with Ranjan Madugalle, the ICC's chief match referee, to answer two charges of breaching the code of conduct following the controversial ending to the final Test at The Oval.

He is charged, as captain, with changing the conditions of the ball and bringing the game into disrepute and faces a variety of sanctions ranging right up to a ban of between two and four Tests and four to eight one-i nternationals.

It follows the controversial scenes at The Oval, when Pakistan refused to return to the field after tea on the fourth day after umpires Billy Doctrove and Darrell Hair accused them of ball-tampering and led to the match being forfeited and awarded to England.

Despite the inflamed situation, the tourists were thought to be committed to the remainder of the tour, which comprises a Twenty20 international and five one-day internationals, but coach Bob Woolmer warned "there will be more problems." if Inzamam received a long ban.

Woolmer added: "I would think the one-day tournament may well be in jeopardy if he isfound guilty and banned for eight games.

"If the punishment was postponed it may be different. This is just what I'm thinking. Certainly after these events, the players are right behind their captain."

Inzamam faces a 50-100 per cent fine of his match fee and/or a one Test or two one-day international ban if found guilty of the first charge, which was brought by the on-field umpires, relating to ball-tampering.

The consequences of the second charge, which has again been levelled because he is the captain, is far more serious and has been brought by all four officials at the Test and relates to bringing the game into disrepute - a charge which could result in the much longer ban.