I read that as the man had gone missing and all they found was the Oscar on the plane.

Whoever wrote that headline is an idiot or an AI.

Oscar schmoscar, Caucher Birkar's Fields Medal got stolen from his briefcase 30 minutes after he received it in 2018. The IMU was able to give him a replacement in another ceremony, making him the only person in history (so far) to get a Fields Medal twice.