There have been various cases of sexual abuse in Antigonish diocese by Roman Catholic clergy.
On August 7, 2009, Bishop Raymond Lahey announced that the Diocese of Antigonish had reached a $15 million settlement in a class action lawsuit filed by victims of sexual abuse by diocese priests dating to 1950. The settlement was approved by the Supreme Court of Nova Scotia on September 10, 2009.
In September 2009, Bishop Raymond Lahey's laptop was seized upon his return to Canada, after having visited parts of Europe. Canada Border Services Agency officers had performed a random search of his computer, uncovering images that raised concerns. Following an investigation Lahey was charged with the importation and possession of child pornography, and he subsequently tendered his resignation as Bishop for the Diocese. Lahey is alleged to have responded to the allegations by stating that he had never abused a child, and that he would "never have any sexual interest in a person under 18".
Subsequent to his arrest, allegations emerged that Lahey had previously been brought to the attention of former St. John's archbishop Alphonsus Liguori Penney in regard to child pornography allegations in the 1980s.
On November 21, 2009 Pope Benedict XVI named Brian Joseph Dunn as the Bishop of the Diocese of Antigonish. Archbishop of Halifax Anthony Mancini had served as Apostolic Administrator from September 2009 until Bishop Dunn's installation on January 25, 2010.
Lahey pleaded guilty to the charges on May 4, 2011. He requested imprisonment, surrendering his right to bail. On January 4, 2012, he was sentenced to 15 months of prison time and 24 months of probation. However, because he had spent 8 months in pre-trial custody, he was given time served and was discharged on the same day. This occurred as a result of a law that was repealed by the federal government in 2010; it had allowed judges to give 2-for-1 credit for time served. This was only possible in Lahey's case because he was charged in 2009, before the law was repealed.