More than four years after a 23-year-old woman was gang-raped and fatally abused in a moving bus in New Delhi, India’s Supreme Court is scheduled to decide whether to uphold the death penalty for four men convicted in the case.

Jyoti Singh was assaulted and raped by five men and a juvenile on a bus on the night of December 16, 2012. She died nearly two weeks later at a Singapore hospital.

Of the six accused in the case, one was found dead in his cell, while the juvenile was released in December 2015 after three years in a reform home.

Four others – Akshay Thakur, Vinay Sharma, Pawan Gupta and Mukesh Singh – were convicted and handed death sentences by lower courts which they have challenged in the Supreme Court.

Convicted killers Mukesh Singh, Akshay Thakur, Vinay Sharma and Pawan Gupta will soon know their fate.

“We have asked the court to consider their family backgrounds and their young age as mitigating factors,” AP Singh, a lawyer representing the convicts said.

“They have no previous cases against them. They should be given a chance to reform.”

“I am sure that the Supreme Court will announce death sentence … I am sure the Supreme Court will give justice to my daughter. This will set an example for the world,” Singh’s mother Asha Devi was quoted as saying by Times of India newspaper.

If the Supreme Court turns down the appeals against the death sentences, the convicts can file at least two more petitions with the court.