Ram Singh was killed and later hanged, alleges his lawyer
The driver of the bus in which a 23-year-old woman was gangraped and fatally injured in December 2012 hanged himself in his jail cell on Monday, prison authorities said, but his family and lawyer said they suspected "foul play".
Ram Singh, the main accused in India's most high-profile criminal case, killed himself in a cell he shared with three other inmates in New Delhi's Tihar jail just before dawn, prison spokesman Sunil Gupta said.
Singh fashioned a noose from threads torn from the mat he slept on and hanged himself from a grille in the ceiling before dawn. While there were closed circuit cameras throughout Tihar, there were none in individual cells, Gupta said.
Gupta could not say how long it would have taken Singh to make the noose or how he had managed to loop it through the grille, which was eight feet (2.3 metres) above the floor.
Singh's lawyer, VK Anand, said his client had been composed and calm when he spoke to him in court on Friday and "didn't have any complaints". Singh, who faced the death penalty if convicted of murder, had not been on suicide watch, Anand and a prison official said.
"I know he had a few complaints of jail authorities torturing him, but nothing that would make him take his own life. We can't rule out foul play. Nothing is adding up," Anand said. Anand has previously always denied that his client was being maltreated in prison. He did not elaborate on the "torture".