The woman, who was allegedly raped last month by an unidentified man of her village, was sleeping in her house late last night at Betai Natunpara village when acid was thrown at her through an open window, Nadia Superintendent of Police SR Jhajharia said.
Suffering from severe burns, she was first taken to a hospital at Tehatta from where she was referred to a hospital at Krishnagar, the district headquarters, he said.
The woman died due to her burn injuries shortly after she was admitted to the hospital, Mr Jhajharia said, adding her body has been sent for a post mortem.
The family is suspecting the hand of a villager who allegedly raped her last month and asked her not to make a police complaint about the crime, the SP said.
But the woman did file a police complaint following which a spot inquiry was conducted by the police a week ago, he added.