The Premier League and the Football Association are to launch a fresh inquiry into West Ham's conduct over the Carlos Tevez affair.

The new investigation, into West Ham's dealings with the striker's representatives after the club had initially been fined US$8.25million for breaching league rules over third-party agreements, will be conducted jointly by the FA and the Premier League.

It follows the findings of an arbitration tribunal in favour of Sheffield United and against West Ham last year which decided Tevez should not have been able to play for the Hammers at the end of the 2006-07 season.

A joint statement said: "The Premier League and the FA are to institute a joint inquiry into the views expressed by the Independent Arbitral Tribunal chaired by Lord Griffiths in September 2008, which dealt with a compensation claim by Sheffield United against West Ham United brought under FA Rules.

"The joint inquiry will examine whether the conduct of West Ham United immediately after the Independent Disciplinary Commission's decision of 27 April 2007 amounted to further breaches of Premier League or FA Rules."

The inquiry means West Ham or individuals could face further disciplinary action but say they have nothing to hide from the new investigation.

A club statement on www.whufc.com said: "West Ham United will co-operate fully with the joint inquiry convened by the FA and Premier League.

"We have acted in good faith throughout the various inquiries and investigations into this matter and fulfilled the undertakings given to the Premier League following the initial penalty.

"We have nothing to hide and will ensure that this is once again reflected in our evidence to the FA and Premier League."

August 31, 2006: West Ham pull off a major coup by signing Carlos Tevez and his Argentina team-mate Javier Mascherano, whose contracts were previously held by Kia Joorabchian's MSI company.

January 31, 2007: Mascherano signs for Liverpool.

March 2: West Ham are charged by the Premier League for breaching their rules in relation to the signings of Tevez and Mascherano.

April 4: A three-man panel is appointed by the Premier League to investigate the signings of Tevez and Mascherano.

April 27: West Ham are fined £5.5million but spared a points deduction after pleading guilty to breaking Premier League rules. The verdict also rules ``the registration of Carlos Tevez can be terminated by the FA Premier League'' but Tevez is later cleared to play on for the Hammers.

May 13: Tevez scores the winning goal in 1-0 victory over Manchester United which ensures West Ham avoid relegation.

May 15: FIFA say they will investigate Premier League ruling.

May 16: Sheffield United file ``arbitration proceedings'' against the Premier League in a bid to overturn the decision not to deduct points from West Ham.

May 22: The Premier League agree to set up an arbitration tribunal to rule on Sheffield United's complaints over the affair.

June 2: Premier League chairmen agree a new rule forcing clubs to disclose every document connected to player transfers to improve ``clarity''.

July 3: Sheffield United lose their legal challenge against the Premier League after an arbitration panel dismiss their claim over the Tevez affair.

July 4: The Blades investigate the possibility of a High Court appeal, on the basis that the arbitration panel made an ``error in law'' in not referring the Tevez case back to the original independent three-man panel which fined West Ham in May.

July 6: Tevez agrees personal terms with Manchester United. The deal is held up as the Premier League insist proceeds of the deal must go to West Ham and not to Joorabchian or MSI.

July 11: West Ham reject an official request from Tevez to cancel his contract with the club.

July 13: Following a private hearing at the High Court, Sheffield United's attempt to gain leave to appeal the arbitration panel's decision is refused.

July 18: Manchester United chief executive David Gill announces the club will ask FIFA to arbitrate on the Carlos Tevez transfer.

July 24: FIFA recommend case to be referred to Court of Arbitration for Sport after deciding not to become involved. However, Joorabchian opts to issue High Court proceedings against West Ham.

August 1: Newspaper reports claim a document was produced in the High Court showing West Ham agreed to Tevez's third-party ownership after the Icelandic takeover, although the club question its authenticity.

August 3: West Ham confirm they have reached a £2million settlement with Carlos Tevez's representatives which will allow the Argentinian to leave the club for United.

August 10: Tevez is confirmed as a United player.

August 16: Sheffield United announce their intention to sue West Ham for cost of relegation from Premier League. West Ham describe the action as ``desperate''.

September 23, 2008: An independent arbitration hearing rules in favour of Sheffield United in their claim for compensation from West Ham.

January 8, 2009: The Premier League and the Football Association announce they will launch a fresh inquiry into the conduct of West Ham over the Carlos Tevez affair.