The victim's mum, who had pushed for the death penalty,
leaves court in tears as the teen is sentenced to three years.
Delhi Teen Guilty Of Bus Gang
Rape
A teenager has been found guilty of the gang rape and murder of a
23-year-old student on a bus in New Delhi last year.
The physiotherapy student died of internal injuries after being raped and assaulted with an iron bar.
It is alleged that six men took part in the attack on the night of December 16, 2012. Her male companion was also beaten up before both were thrown from the bus.
The 18-year-old has been sentenced to three years in a correction facility - the maximum penalty he could be given. The sentence will include the time he has already served custody.
The court case ended in July but the juvenile court had postponed the verdict for the youngest defendant, 17 at the time, four times.
"He has been held guilty for rape and murder and sentenced to three years subject to review," Anil Sharma, the chief investigating officer in the case, told reporters outside the court in the capital.
The woman's mother emerged from the court in tears and said: "He got just three years ... from December onwards he has been given three years."
Her family had earlier called for the teenager to be given the death penalty, saying the juvenile justice system, which seeks to reform rather than punish, was too lenient.
During the trial the court heard that the teenager refuted the police charge sheet that he was the "most brutal" of all the six accused men.
His lawyers submitted there was no medical evidence to connect him to the charges and no fingerprints could be detected within the bus to show complicity.
A native of Uttar Pradesh, the suspect came to Delhi when he was 11.
He worked at a number of road side restaurants before taking up a cleaner's job on the bus. He told the court he was a victim of the alleged ringleader of the group, Ram Singh, for whom he worked and "was not paid by for months".