In May 2021, we began excavating the church with the aim of validating the results of previous research and clarifying unclear parts of previous documentation. As recorded by Mátyás Bél (Matej Bel), the church had already been excavated in the 18th century in search of the bones of its founder, King Andrew I. Subsequently, excavations were carried out several times for renovation purposes, most recently in the 1890s, and in 1953 under the leadership of archaeologist Gyula László. One of the questions of the research was whether anything at all can be identified from the former burial place of the king, what traces of the later centuries' use have left on the building, and to what extent the present-day crypt can be considered an intact 11th century building.