In 828, relics believed to be the body of St. Mark were stolen from Alexandria by Venetian merchants and taken to Venice. Copts believe that the head of St. Mark remains in a church named after him in Alexandria, and parts of his relics are in St. Mark's Cairo's Cathedral. The rest of what are believed to be his relics are in the St Mark's Basilica in Venice, Italy. Every year, on the 30th day of the month of Paopi, the Coptic Orthodox Church celebrates the commemoration of the consecration of the church of St. Mark, and the appearance of the head of the saint in the city of Alexandria. This takes place inside St. Mark Coptic Orthodox Cathedral in Alexandria, where the saint's head is preserved.