Emergency Landing Due to a Passenger Medical Issue

According to the information we have received, an emergency landing is being made in Belgrade due to a passenger falling ill. The flight is currently the most-watched flight on Flightradar.
What happened?
SunExpress flight #VF6, operating on behalf of AJet, on the Düsseldorf – Ankara Esenboğa route, declared the 7700 code for an unknown reason and is making an emergency landing in Belgrade. The aircraft is a Boeing 737 with the registration TC-SEM.
More details to come.
❓ What is 7700?
The 7700 code itself does not indicate the severity of an emergency. When the 7700 code is transmitted, it means that an abnormal situation has occurred. However, it does not directly specify how urgent the situation is or the exact nature of the issue. The main purpose of this code is to notify air traffic controllers of an abnormal situation, ensuring that necessary assistance and priority are provided if needed.