"Fifteen people are undergoing treatment for injuries they sustained in the collapse of City Light Hotel and Bakery on Rashtrapati Road yesterday," Greater Hyderabad Municipal Corporation (GHMC) commissioner M T Krishna Babu said.
 
The removal of the debris would continue tonight as well, he said.
 
The nearly 80-year-old two-storeyed building crumbled yesterday morning.
 
Police said that son of the hotel owner was one of the victims in the mishap.
 
"The injured were shifted to state-run Gandhi Hospital, where five among them were discharged while doctors performed surgeries on four others," an official said.
 
Meanwhile, the GHMC began a drive to demolish unsafe buildings and verify the safety of old buildings.
 
A combination of factors like construction of furnaces for cooking in the upper floor and seepage from a water tank have been cited as the possible reasons for the collapse.
 
A police case of negligence had also been registered against hotel owners.
 
The eatery was a favourite for morning tea and snacks for a large number of people, especially those belonging to the working class.