The magnetic anomaly in the Rochovce area is caused by anomalously increased magnetic properties of the hidden Upper Cretaceous granite body. The granites of this body show high values of magnetic susceptibility assigning them to the magnetite series of Ishihara (1977). The analysis of physical properties of the granites points to the existence of three physically differing types (intrusive phases). The inner magnetic fabric of the body is anomalous, being deformed in the near-horizontal direction as established by our study of the magnetic susceptibility anisotropy tenzor.