New Delhi (CNN) A 23-year-old woman in the Indian state of Uttar Pradesh died Friday, a day after she was set on fire as she traveled to testify at the trial of two men accused of raping her, according to police.

The unidentified woman died Friday night of cardiac arrest at a hospital in New Delhi where she was transferred Thursday, said Poonam Dhanda, administrator at Safdarjung Hospital.

Before she died, she told police she was attacked on the way to the railway station in Unnao, where she and the alleged rapists are from, according to local senior police official Gaurav Kumar Tripathi.

The woman suffered burns to 95% of her body, Dhanda said.

The woman told police that the two men, who stand accused of raping her in March, were involved in Thursday's attack, along with their respective fathers and a nephew. One of the two accused rapists was out on bail, and the other one had been on the run, police told CNN.

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