A package containing explosives has been found at a congregation of Jehovah’s Witnesses in Austria. As it turned out on Saturday, it could have “potentially caused great damage,” the police reported. The service took place on Friday evening in Kalsdorf, to the south of the southern city of Graz. Around 50 people were in attendance. The package was discovered in the entrance area of the building. The police arrived, cordoned off the area and recovered the package. The operation lasted all night because explosives experts feared that the parcel was dangerous and could only move it with extreme c…