Preliminary investigation revealed that Abhijeet was unhappy with the quantity of crackers and decorative lights his father had bought; he wanted him to buy more.
His parents tried to mollify him by promising to buy more crackers and lights next year, but he was still upset and locked himself in a room, the police officer said.
When he did not come out for a long time, his parents peered from the window and saw him hanging from the ceiling fan. Upon breaking open the door, they found him dead.
Police are conducting further probe.