Four workers were killed and three injured after a boiler exploded in a sugar factory in Mudhol in Karnataka’s Bagalkote district. The sugar factory is a unit under the Nirani Sugars Limited, owned by the Nirani brothers — BJP MLA Murugesh Nirani and his brothers Sangamesh and Hanumantha. Speaking to News18, Murugesh Nirani said the explosion occurred in a treatment plant which is about half a kilometre from the factory. "There are around 1,000 workers in the factory. The blast occurred in a treatment plant about half a kilometer away from the factory where seven people were working today. Three died on the spot, one in the hospital and three are being treated at the hospital,” he said.