A report from the Guardian notes that police indicated that the Prague mass shooter “legally owned multiple firearms.” This means he complied with the Czech Republic’s myriad gun controls, including the acquisition of a gun license, which requires passage of a mental and criminal history background check and a demonstration of good cause for owning a gun. Other gun controls pertinent to legal gun ownership in the Czech Republic include passing a gun safety test, storing the gun according to regulations, and registering the weapon with the “regulating authority,” according to the University of Sydney’s Gun Policy Center.