Jeremy Aquilina, 25, has been charged with five counts of sexual assault and one count of an act of indecency.

The alleged assault occur- red on Saturday night in a park near Jeremy Aquilina's house in Raleigh Place, St Clair.

Police said the woman had told them she visited the house that night and was later assaulted in a park.

Mr Aquilina was arrested at home on Sunday. He was granted conditional bail by police and is due to appear in Penrith Local Court on March 29.

John Aquilina is the leader of the house and a former minister for education and training, and fair trading. He is the longest serving state MP.

A spokesman for the leader of the house confirmed last week charges had been laid against Mr Aquilina's son.

''The details of the case are on public record ? Mr Aquilina will not be making any further comment.''

Jeremy is the second of Mr Aquilina's three children.