Decision due on Bowraville murders retrial

© Getty A man acquitted of murdering two Aboriginal children in Bowraville in the 1990s will learn whether he will face a retrial over their deaths.

Three appeal judges will decide on Thursday whether there's fresh and compelling evidence for the 52-year-old to be retried after hearing an application by the NSW government last year.

The alleged killer, who can't be named for legal reasons, was previously acquitted of murdering two of the children - Evelyn Greenup, 4, and Clinton Speedy-Duroux, 16 - in late 1990 and early 1991.

However, it is fresh evidence in the disappearance of a third Aboriginal child, Colleen Walker, 16, which could compel the courts to consider a new trial.

Ms Walker's clothing was pulled from the Nambucca River in a bag weighed down with rocks, although her body has never been found.