The head of Poland's Roman Catholic Church has said he is asking the Vatican to investigate the cover-up of child sexual abuse by priests.

Axar.az reports citing foreign media.

Archbishop Wojciech Polak called on the Church hierarchy to "launch proceedings" following the release of a documentary on the subject on Saturday.

The film tells the story of two brothers who seek to confront a priest who allegedly abused them as children.

The Vatican is expected to assign an investigator to the case.

The film - "Hide and Seek" - has been viewed more than 1.9 million times on YouTube. It is the second documentary on the subject by brothers Marek and Tomasz Sekielski.