The more than 100 bones and decayed body parts found Friday inside a police building in northern India will be subject to DNA tests and an investigation into how they wound up in a room in the structure in Uttar Pradesh state, Agence France-Presse reported Monday. The grisly discovery was made two weeks after about 80 skeletons and decayed bodies were found in the Ganges river, according to CNN.

"Sacks of bones and jars of (decaying) organs were found on Friday. The room had not been used in over six years but some workers spotted them through an open window," G.N. Soni, a senior police official, told AFP. "The expert committee has already submitted its report to the district magistrate.”

It’s unclear how the bones and body parts “were left to rot in the room,” an unnamed police official told AFP. DNA tests will be conducted on the 100 bones and skulls, some of which are from the early 1980s. CNN added that foul play is not suspected.

The room in the police building in Unnao, India, was used as a mortuary until 2008, according to CNN. The bodies had been kept there after post-mortem examinations and before the start of funerals, Unnao police official Ram Kishan Yadav told CNN. The police mortuary was then moved to a hospital.

"These body parts were to be shifted to the district hospital mortuary but we don't know how they have since been kept here in the police station," he told CNN. "Investigation is still ongoing."

The investigation will include why the body parts and skeletons weren’t disposed of, official Mahendra Pal Singh told the Times of India.

The discovery comes after another incident on Jan. 13, when about 80 human skeletons and decayed bodies were found floating in the Ganges river in Unnao, the paper said.