Ahead of Carnival celebrations kicking off in Germany on Thursday, the Islamic State militant group called for attacks targeting revellers in Cologne and Nuremberg.Islamists suspected of belonging to the so-called Islamic State have used social networks to call for attacks-- including on Cologne's upcoming Carnival celebration.

BERLIN (Reuters) - Police are on high alert ahead of Germany's traditional carnival celebrations this week after social media connected to the Islamic State militant group called for attacks targeting revellers in Cologne and Nuremberg, said police spokespeople.

Following recent terror attacks in Germany, police are stepping up security controls for carnival season - but say there is no reason for festival-goers to worry.

Police are on high alert during Germany's carnival after social media sites linked to ISIS called for attacks in Cologne and Nuremberg. Security is being enhanced with over 1,400 officers deployed. Some events have been cancelled amid safety concerns.

The Islamic State is calling for terrorist attacks in Europe, according to media reports from Germany. The list of targets by the Islamists includes four locations, three of which are in Germany. The attacks are expected to occur in crowded places during the carnival,

The Islamic State is calling for terrorist attacks in Europe, according to media reports from Germany. The Islamists' list includes four targets, three of which are in our western neighbor. The attacks are planned for crowded places during the carnival,