Attorneys representing “The Dark Knight” star Christian Bale have released a statement on their client’s arrest Tuesday morning for assault charges.

“Christian Bale attended a London police station today, on a voluntary basis, in order to assist with an allegation that had been made against him to the police by his mother and sister.

“Mr. Bale who denies the allegation, co-operated throughout, gave his account in full of the events in question, and has left the station without any charge being made against him by the police.

“At this time, there will be no further comment by Mr. Bale.”

So unless mum and sis are talking, we may never know what this was all about.

Bale is a notoriously private actor, and I’m betting this mystery will never be fully solved.

Families are complicated, sibling relationships are tricky and childhood stuff never really goes away. Just ask Bruce Wayne.