BELFAST, Northern Ireland (AP) _ Every IRA prisoner in Northern Ireland's main anti-terrorist prison opposes starting to disarm as the peace accord envisioned, a leader from an IRA-allied party said today.

``Not a single political prisoner suggested that there should be a gesture or any movement,'' Gerry Kelly of Sinn Fein said after meeting with the 82 Irish Republican Army prisoners still inside the Maze prison, southwest of Belfast.

Meanwhile, the British government filed a court order to challenge the scheduled release dates for four IRA prisoners held in the Maze _ among them the bomber who tried to kill former Prime Minister Margaret Thatcher and her Cabinet.

The independent Northern Ireland Sentences Review Commission established as part of the peace accord had ruled that three of the prisoners, all serving life sentences, could be freed Tuesday and the other on June 22.

But because all four were convicted and initially imprisoned in England rather than Northern Ireland, the government's minister responsible for law and order in England, Home Secretary Jack Straw, thinks each prisoner's parole date should be approved by him, not the commission. The matter could be resolved in a London court Tuesday, and the government denied accusations it was seeking to put pressure on the IRA.

About 120 IRA prisoners already have been freed early to reward the IRA's July 1997 cease-fire and Sinn Fein's acceptance of the Good Friday peace accord last year.

That agreement anticipates the IRA completely disarming in cooperation with an international commission by May 2000, but specifies no starting date.

Unless the IRA starts handing weaponry over, the Protestant politicians who support the peace agreement say they will refuse to form any coalition government that includes members of Sinn Fein.

The coalition government should have been formed by last October, and now faces an April 2 deadline.