A woman in the Indian state of Uttar Pradesh died after she alleged that two policemen set her on fire inside a police station following her refusal to pay a bribe, said a report published on BBC.

The incident took place on Monday in Barabanki town, the report quoted senior police official Abdul Hameed as saying.

Neetu Dwivedi, 40, had gone to the police station to free her husband, who had been detained over investigation in a crime.

She told a magistrate before her death that the policemen asked her for 100,000 rupees, adding that upon her refusal, they set her on fire.

Dwivedi died after sustaining 80 per cent burns.

In her dying declaration before a magistrate and reporters, she accused her alleged attackers of abusing and humiliating her when she refused to pay the bribe.

However, the accused policemen refuted her allegations, and said she tried to self-immolate herself.

The policemen have been suspended and Uttar Pradesh Chief Minister Akhilesh Yadav has ordered an inquiry into the case, the BBC report said.

The victim's son — who is a journalist with an Indian publication — has said he wants justice as his "mother will only rest in peace when the guilty are punished."

The incident comes barely a month after Indian journalist Jagendra Singh was set on fire allegedly by some policemen in the state's Shahjahanpur district.