Cardinal George Pell has written to Acting Victorian Police Minister Robin Scott asking for an inquiry into a "maliciously timed" leak concerning a police investigation into abuse allegations.

Key points: Pell writes to Victoria Police asking for probe into alleged investigation leak

Pell writes to Victoria Police asking for probe into alleged investigation leak Says "leak" was "maliciously timed" before royal commission testimony

Says "leak" was "maliciously timed" before royal commission testimony Cardinal due to give evidence on February 29 from Rome

A statement from Cardinal Pell's office said details of the allegations were published in the Herald Sun, and were "scandalous and utterly false".

Cardinal Pell has denied the allegations.

"The article published by the Herald Sun leads to the conclusion that this information must have come from Victoria Police or another agency working with it," the statement from Cardinal Pell's office said.

Cardinal Pell said the allegations had "never been put to me by police".

"The leak was clearly designed to cause damage to me as a witness ahead of my evidence in the royal commission next week," the statement read.

Victoria Police said it had referred the matter to the Independent Broad-based Anti-corruption Commission (IBAC).

"Victoria Police is concerned about media reporting alleging that police have leaked details of a sensitive Taskforce Sano investigation," a statement read, adding the organisation "takes this allegation seriously".

Taskforce Sano looks at historical sexual offending.

A spokeswoman for Mr Scott said it was inappropriate to comment on any matter before IBAC.

Cardinal Pell, 74, is due to give evidence to the child abuse royal commission via video link in Rome on Feburary 29, after he was excused from appearing in person due to ill health.

A group of survivors will fly to Rome to hear Cardinal Pell's evidence in person after a GoFundMe campaign raised funds for their trip.

Commissioner Justice Peter McClellan told the third public hearing sitting in Ballarat the survivors' request was "reasonable" and that the commission was trying to find a suitable location for the testimony in Rome.

He told the inquiry a suitable hotel room in the city's centre had been located and tests would be carried out to ensure the hearing could be video linked back to Sydney.

The group of 15, made up of 10 survivors and five support staff, will leave for Rome on Friday.

Editor's note: On Tuesday April 7, 2020, the High Court in a unanimous decision upheld Cardinal Pell's appeal and quashed his convictions on all five charges.