A Class XI student has been arrested on the charge of killing college librarian Samanvay Bhattacharjee, who was found dead in his Bijoygarh flat on Thursday evening.
Police said the 19-year-old accused, Mangal Mondal, a student of a school in Canning in South 24-Parganas, used to take tuition from the 32-year-old librarian.
Samanvay’s father Chirantan identified Mangal as the one who he said had rushed to the apartment when he raised an alarm on seeing his son lying still.
“A preliminary post-mortem report suggests Samanvay had been punched on the face and other parts of the body before being strangulated. Mangal has admitted to having killed the librarian. He said he was stealing money from a cupboard in the flat when Samanvay woke up. It was then that he killed Samanvay. We are verifying his claims,” said joint commissioner (crime) Pallab Kanti Ghosh.
Sleuths suspect Samanvay, who gave private tuition and joined Bijoygarh College as librarian a couple of months ago, was killed in his flat around 1.30pm.
Samanvay lived in the Bijoygarh flat alone. Like on other days, his father brought him evening snacks on Thursday, too. Chirantan, a retired state government official, also used to give tuition in the flat.
The father said he found the flat door open and his son lying still on a bed. “While I was entering the flat, I saw Mangal standing in the compound of the apartment block. When I raised an alarm after failing to wake up my son, he rushed in,” said Chirantan.
However, as neighbours started pouring in on hearing about the unnatural death, Mangal disappeared.
“The way the boy disappeared raised suspicions. We learnt he was seen outside the apartment around the time Samanvay is believed to have been killed on Thursday afternoon. Before we could send a team to his house in Canning, he and his parents were seen near Samanvay’s flat around Thursday midnight. He was arrested,” said an officer.
Mangal, who got married last November, initially claimed that he was innocent. “But he broke down during interrogation and confessed to the murder,” the officer said.
“Mangal came to Calcutta early on Thursday. He called Samanvay dada (elder brother) and would often cook for him. They shared an amicable relationship till a few days ago,” the officer said.