Cologne Cathedral: Further assessments at German landmark after assault caution BBC.comChristmas Eve worshippers to stand safety screening at Cologne cathedral as police cite assault chance ABC NewsAustrian, German police on alert because of Christmas terror risk – file The Jerusalem PostEurope: Warnings Of Coordinated Terror Assaults On Christmas Crowds – I24NEWS i24NEWSGerman police warn of conceivable assault at Cologne Cathedral DW (English)
