International tennis leaders have set out the scope of their independent investigation of allegations of match-fixing and corruption in the sport.

The sport's four governing bodies announced the terms of the probe Friday, saying an independent review panel "will investigate thoroughly the allegations of corruption in international professional tennis and the effectiveness of existing anti-corruption practices and procedures."

The three-person panel, headed by Adam Lewis, is expected to take 12 months to complete the probe.

The decision to carry out an independent review was announced during last month's Australian Open. The move followed reports by BBC and BuzzFeed News alleging that match-fixing was widespread at the top level of the game and that authorities failed to thoroughly investigate evidence.

The ATP, WTA, ITF and Grand Slam Board said the panel will look into the work of the Tennis Anti-Corruption Program, the Tennis Integrity Unit, and Tennis Integrity Protection Program.