The Vatican has expressed shock at raids, including the "violation" of a cathedral crypt, by Belgian police investigating alleged child sex abuse.
As well as searching a couple of main Church offices and a cardinal's home, police had drilled holes in two archbishops' tombs, said the Church.
Prosecutors said the raids were over alleged "abuse of minors committed by a certain number of Church figures".
Belgium is one of many countries where the Church has been hit by sex scandal.
In April, the Bishop of Bruges, Roger Vangheluwe, resigned after admitting he had sexually abused a boy more than 20 years ago.
'Da Vinci Code'
The Vatican has summoned the Belgian ambassador to the Holy See to voice anger over Thursday's raids.
Police in Leuven seized nearly 500 files and a computer from the offices of a Church commission investigating allegations of sex abuse.
Continue reading the main story Archbishop Andre-Joseph Leonard at a news conference in Brussels on 25 June 2010
We are surprised it went as far as drilling into tombs
Archbishop Andre-Joseph Leonard Leader of the Church in Belgium
They also searched the Church's headquarters, the Brussels archdiocese in Mechelen, north of the Belgian capital.
Bishops holding a meeting there were barred from leaving the premises for several hours and had their mobile phones confiscated, said Church officials.
BBC