Scottish police are investigating allegations of horrific physical and sexual abuse at one of Scotland's most prestigious Catholic boarding schools.

Dozens of ex-pupils say they were abused by Benedictine monks at the Fort Augustus Abbey school in the Highlands and its preparatory school in East Lothian, as well as the Carlkemp school.  All are shut down.

One of the monks allegedly raped at least five boys.  That monk is Father Aidan Duggan who is originally from Australia.  He taught at Fort Augustus and Carlkemp prep school before returning home to become a parish priest in Sydney, where he died in 2004.

The former students say the headmasters of the schools rejected their complaints. 

Also accused is 77-year old Father Chrysostom Alexander, another Australian who returned to work in Sydney and was been suspended by the Catholic church after he was confronted about the allegations by a journalist.

The allegations were outlined in a BBC documentary called “Sins of the Fathers” which was broadcast in Scotland on Monday night.  It’s the latest in a series of scandals revolving around sex abuse by catholic clergy, and the church’s alleged cover-up by transferring the abusive clerics to other parishes and often to other countries.