IT HAS been revealed in a Melbourne court that WikiLeaks founder Julian Assange once helped Victoria Police in two investigations into child pornography.

He provided expert technical advice and support to assist in the prosecution of people suspected of involvement in pornography offences on the internet.

The Saturday Age can now report this after a judge yesterday revoked a suppression order she imposed last month, partly out of concern for Assange's safety.

Judge Jeanette Morrish last month suppressed a portion of a transcript of Assange's court appearance in 1996 when he admitted computer hacking offences.

The paragraph included his lawyer stating that in 1993 Assange had ''provided assistance to police authorities'' but he could not elaborate.