Catholic clergy had to do some spiritual clean-up after someone urinated on one of the holiest places in Vatican City last Friday.

People watched in horror as a grown man climbed the steps to the Altar of the Confession, dropped trou and relieved himself in front of a crowd at St. Peter’s Basilica.

Footage of the incident appeared to show a pair of security personnel trying to pull the bare-bottomed culprit away from the altar while a giant sculpture of St. Veronica looms in the background.

The offender, who has yet to be identified to the public, was eventually detained by Vatican City police officers and is believed to still be in custody, according to a report from the Telegraph.

The desecrated altar lies directly above the tomb of St. Peter, the church’s very first pope, and is where the acting pontiff traditionally performs mass.