A PhD student of the Indian Institute of Science committed suicide in his hostel room in Bangalore, a senior police official said on Monday.

Twenty-two-year-old Ajay Srichandra was found hanging from the ceiling of his room on Monday morning, said Deputy Commissioner of Police (Central) B N S Reddy.

"His friend Deeptaroop Nandi called Ajay on his mobile but got no response. He went up to Ajay's room and rang the bell, but there was no answer. When he peeped through the window, he saw Ajay's body hanging from the ceiling," informed Reddy.

Ajay's body was sent for a post-mortem to the M S Ramaiah Hospital.

A suicide note addressed to Ajay's father was found in his room. "I am sorry dad. The world is not for me. It is too much for me to take," stated the note.

Ajay had been pursuing his doctoral thesis in integrated science at the IISc since the last two years.

According to his professor Raghavendra Gadagkar, Ajay, a resident of Hyderabad, was an "irregular student who was not attending his laboratory classes regularly". Professor Gadagkar had asked Deeptaroop to talk to his friend and find out the reason for his irregular attendance.

According to the police, Ajay confided in Deeptaroop and told him on Sunday night that he was "depressed and not comfortable in IISc". Anxious about his friend, Deeptaroop volunteered to stay with him in the night, but Ajay assured him that it wasn't necessary."

 "It is a case of deep depression and we are investigating the matter," said Reddy.