What is the reason behind Sushant Singh Rajput's suicide attempt

A mountain of sorrows broke on the family and the fans of Sushant suffered a major setback. Sushant Singh Rajput committed suicide by hanging himself in the room of his house in Bandra today. 

 After this news came out, everyone from the film industry to the sports world and politicians were shocked.

The reason for Sushant's suicide has not been clear yet.