Two floors in the north-east portion of the historic Rajwada Palace collapsed on Monday morning.
Sources said restoration work was stopped recently and the archaeology department was in the process of floating tenders to begin work.
Luckily, there were no visitors as it was morning hours.
The walls made of brick and lime and the wooden brackets had undergone a lot of decay over the years. “The recent spell of rains had weakened the structure further and it could not bear weight of the slabs,” Indore museum curator Prakash Paranjape said.
The rooms were used as guard’s room during Holkar reign, he said, adding that the portion is separate from the main seven-storey monument.
“We are closely inspecting all portions of the monument and necessary steps will be taken immediately to protect the monument,” Paranjape said.
Constructed during the reign of Malhar Rao Holkar, the monument saw work begin in 1747 and complete in 1766. The structure suffered massive deterioration after fires broke out in 1801, 1837 and 1984.
Divisional commissioner Sanjay Dubey also inspected the palace and issued directions to conserve its grandeur.
During and after the reign of Holkars, Rajwada Palace became a symbol of pride for people of Malwa region. It is one of the main attractions for tourists in Indore. Rajawada Palace exhibits a perfect blend of Maratha and Mughal architecture. The lower three floors of the seven storey monument are made of stone and the upper floors made of wood.