In a continuing drive against illegal constructions to save water bodies, Telangana’s Sangareddy district authorities demolished a multi-storeyed building constructed in a lake with a controlled explosion on Thursday.

The four-storeyed building was constructed without permission in a lake in Malkapur in Kondapur mandal, about 60 km from Hyderabad.

Acting on a complaint by the villagers, revenue authorities demolished the structure using explosives. The owner had even constructed a ramp with a staircase leading to the building in the lake.