Emergency declared 11.05.2014 Nice, France

Hello,

I was on descent to Cannes yesterday around 1730z when the aircraft behind us (also en route to Cannes, I think) declared an emergency due to the Captain having a suspected heart-attack, and diverted to Nice. The registration was something like C-FCMK though I may have a letter incorrect, so have been unable to trace the aircraft. Does anybody know anything more?