Santiago: Prosecutor have seized documents in raids on Roman Catholic Church offices in two Chilean cities as part of an investigation into growing clergy sex abuse scandals.

The surprise police raids on Wednesday targeted the headquarters of Santiago's Ecclesiastical Court and the diocese in Rancagua in the O'Higgins region, where 14 priests are accused of having had sexual relations with minors.

Archbishop Charles Scicluna, left, and Spanish Monsignor Jordi Bertomeuof, right, take part in a press conference at the Catholic University of Chile, in Santiago, Chile. Credit:AP

Ther aids took place as two investigators sent by Pope Francis met with Chilean prosecutors, including Attorney-General Jorge Abbott, to coordinate their response to scandals that have discredited the Chilean church and last month led all of its 30-plus active bishops to offer to resign over their collective guilt in failing to protect children from abusive priests.

"The commitment is to a greater collaboration between the institutions," Abbott said, adding that church and civilian authorities were going to set up a system to provide victims with the protections needed to come forward and freely lodge complaints.