Justice Minister Ang Vong Vathana has indicated New Zealander Graham Cleghorn may get a chance to re-appeal his child rape conviction and 20-year jail sentence.

The announcement on March 8 came ahead of a visit by New Zealand's Thailand-based ambassador Peter Rider to discuss the case, amid allegations of corruption and that the court had considered the appeal without Cleghorn's knowledge.

Cleghorn says five girls he was accused of raping were paid US$10,000 in bribes by Cambodia's Women's Crisis Center to falsely testify against him. The center's director, Oung Chan Thol, denies this.