Police sources said that the authorties of the home, Rehabilitation Centre for Mentally Ill persons (Women), claimed that the woman was killed when a ceiling fan fell on her head on July one.
After obtaining the death certificate the authorities buried the body as per the custom of the private home run by a person named by Uday Chand Kumar, the sources said.
Villagers, however, alleged that there was foul play behind the death of the woman and informed the police, the sources said.
The Circle Inspector Subir Roy and Officer-in-Charge of Gurap police station, in the jurisdiction of which the home falls, was investigating the death, they added.