A French Navy Atlantique 2 maritime patrol aircraft was illuminated by the fire-control radar of a Russian long-range air defense system, while flying over the Baltic Sea earlier this week, according to France’s Minister of the Armed Forces Sébastien Lecornu.

NATO announced a new mission on Tuesday to better protect critical underwater infrastructure in the Baltic Sea with significantly more ships, aircraft and drones, as concerns about Russian aggression in the region grow.

The incidents contributed to mounting European fears of sabotage, as NATO officials accuse Russia of a growing “destabilization campaign” over their military support for Ukraine and sanctions against Moscow.