The Delhi gangrape victim's father on Tuesday said he wanted death penalty for all the six accused in the case.
"I only want that all six people should be hanged," the victim´s father told media on Tuesday.
The trial of the five men charged with gangraping and brutalising a 23-year-old medical student on a moving bus in the national capital on Dec 16 formally began on Tuesday.
Reports said the prosecution has called four witnesses including the software engineer man, who was with the victim and had tried to save her.
The Delhi Police, meanwhile, filed a supplementary chargesheet in the case.
It included the victim´s autopsy report from the Singapore hospital where she died last year.
Before she died on Dec 29 at a Singapore hospital, the victim had recorded her statement. That would be crucial evidence in the case.
On Saturday, the five pleaded not guilty to the charges read out to them. They could face death penalty, if convicted.
A fast-track court in Delhi framed charges against the five accused in the Delhi gang-rape case on the same day.
The sixth accused, a juvenile, is being tried by juvenile justice board. He faces a maximum punishment of three years in a reform facility.
The police has said he was the most brutal among the assaulters.
The girl´s death sparked national outrage and protests on the lack of security for women in India.