A human skeleton was found inside a tank in an MCD school in Mukhmelpur village of Alipur area in Rohini district, police said Thursday.

Police were informed about the incident by the school authorities on Wednesday evening, they said.

Police said a skull and some bones were recovered from the tank after a few labourers involved in the cleaning spotted it and immediately alerted the school administration.

Police along with crime and a forensic science laboratory (FSL) team visited the spot and are waiting for the FSL report to ascertain how old the skeleton is and if was of a man or a woman, a police official said.

The police are also questioning the school authorities and those involved in the maintenance of tank, he said.