CBI sources said the remains were exhumed from Telkupi ghat and comprised a skull, a number of bones, hair, a quilt, a green bedsheet and parts of a salwar kameez.
Believing that these might have belonged to a woman, the sources said the articles had been sent for forensic tests tomorrow.
Biswanath Murmu, who had been earlier arrested for carrying bodies of women from the home to the cremation ground in his tractor, had confessed that the body exhumed during the day had been brought by him, the sources said.
CBI, which had been directed to investigate the matter by Calcutta High Court on February 18 this year following a PIL, had visited the cremation ground on March 3 following confessions of those arrested in connection with the death of the woman at the welfare home situated in nearby Gurap in Hoogly district.