January 21: The trial of five adult suspects begins in New Delhi.

March 11: One of the accused takes his own life in prison, according to authorities.

August 31: A teenager who was 17 at the time of the attack is sentenced to three years in a juvenile correctional facility.

September 10: Four adult suspects are found guilty of the gang rape and murder of Nirbhaya.

September 13: All four are sentenced to death for Nirbhaya’s rape and murder. They appeal their sentence.