An American military plane with four crew members on board crashed in Norway during a NATO exercise, representatives of the Norwegian Emergency Service said on Friday.

The American plane (tiltrotor) Osprey “went missing at 18:26 (17:26 GMT) south of Buda, in northern Norway, in bad weather conditions, the regional emergency service (HRS) said in a statement.

The crew of the aircraft participated in the NATO military exercises “Cold Response.” 30,000 people from NATO countries and alliance partners are participating in the exercises.

In a statement, HRS said that rescuers conducting an air search spotted parts of the plane in the area where it went missing, but the weather was too bad for them to land.

Rescuers and police were sent to the scene.

“We are not at the scene [of the incident], so we do not know anything about the [condition] of the four [crew members] who were on board. But we know the place where the crash occurred,” said HRS representative Jan Eskil Severinsen on the NRK TV channel.

“We found the plane that crashed. We didn’t see any signs of life,” Bent Eilertsen, chief of staff of the Nordland police, told Reuters in an interview.

The purpose of the “Cold Response 2022” exercise is to test how Norway will manage allied units on its territory in the event of a need for NATO collective defense.

The exercises are taking place against the backdrop of high tension between Russia and NATO in connection with Moscow’s invasion of Ukraine, but they were planned long before the start of hostilities launched by the Kremlin on February 24.