Police in Belgium raided the palace of the Archbishop of Mechelen, north of Brussels, following a string of sexual abuse allegations against Church figures.
Officers seized a computer and sealed off the premises, said an AFP report in the Sydney Morning Herald.
A spokesman for Brussels prosecutors Jean-Marc Meilleur said that the action was "in order to establish if these accusations are backed up or not".
Some 450 submissions to a special independent commission set up in eastern Louvain to examine complaints received of child abuse in the past were also taken by officers in a related swoop.
Belgian media reported that documents held by the commission were supposed to have been passed over "discreetly" to justice officials, but that clearly that had not yet been done as expected.
The Catholic Church in Belgium has endured some of the worst of the worldwide paedophilia scandal to beset the Vatican, having been rocked in April when its longest-serving bishop, 73-year-old Roger Vangheluwe, resigned from his Bruges post after admitting sexually abusing a boy for years, the report added.
Police raid Belgian Catholic hierarchy in abuse probe (Sydney Morning Herald/AFP)
Image from the Belgian police website