- Cologne Cathedral: Extra checks at German landmark after attack warning BBC.com
- Christmas Eve worshippers to face security screening at Cologne cathedral as police cite attack risk ABC News
- Austrian, German police on alert due to Christmas terror threat – report The Jerusalem Post
- Europe: Warnings Of Coordinated Terror Attacks On Christmas Crowds – I24NEWS i24NEWS
- German police warn of possible attack at Cologne Cathedral DW (English)
![Cologne Cathedral: Extra checks at German landmark after attack warning – BBC.com](https://ichef.bbci.co.uk/news/1024/branded_news/262D/production/_132137790_gettyimages-1871538584.jpg)