Some people saw drones flying over military places in Denmark. The drones also flew over airports and other countries like Germany, Norway, and Lithuania. The police and the army in Denmark are looking for who sent the drones, but they do not know yet.

The drones made some airports close for a short time. Some airports in Denmark, Norway, and Lithuania stopped flights because of the drones. The drones did not hurt anyone, but people are worried about safety.

Some people think Russia could be behind the drones, but there is no proof. The Danish government says the attack was from a professional group, but they do not know who. Other countries in Europe are also watching for drones and are talking about how to stay safe.