Chandigarh, July 5 -- A major fire broke out at an agrochemical factory in Haryana's Karnal on Saturday, police said. No one was present inside the factory's godown near Nagla Chowk when the fire broke out, Sadar police station SHO inspector Tarsem said. The blaze sent thick black smoke billowing into the sky, police said. Several fire tenders were rushed to the spot after authorities received information about the incident, and efforts to douse the flames were underway. The cause of the fire has yet to be ascertained, and an investigation has been initiated, police said....