One week after thousands of Catholic laywomen signed a letter asking Pope Francis to respond to their questions about the Church’s sexual abuse crisis, a group of Catholic laymen have penned their own letter to the pope and American bishops, calling for an investigation into the Church’s role in preventing sexual abuse.

The letter is hosted on the website “Catholic Men United for Christ,” but it is not sponsored by any group or organization. The signatories of the letter pledge to do some form of fasting on each Friday starting Sept. 7, and continuing through 2018.