Two drones were spotted over a military base in western Germany — this came just days after an explosive-laden drone was discovered at Leipzig airport near Ukrainian An-124 Ruslan aircraft.

The base is located in the town of Mechernich in the state of North Rhine-Westphalia, not far from Bonn; according to available information, components for American Patriot air defense systems are stored there.

A spokesperson for the Bundeswehr Armed Forces Command said that military police officers were dispatched to the scene, after which the case was handed over to the local police.

Some European officials had previously accused Russia of attempted sabotage using UAVs, but Moscow called those claims absurd.

Air defense systems, chiefly Patriots, are crucial to Ukraine’s ability to intercept Russian ballistic missiles. This week, Ukrainian President Volodymyr Zelensky appealed to allies for additional supplies of interceptor missiles.

German Interior Minister Alexander Dobrindt told Bild newspaper that Germany had become one of the main targets of “destabilizing attacks.”

“We are not at war, but we are becoming a target every day in a hybrid war,” he said.