New Delhi, Jumada II 21, 1439, Mar 9, 2018, SPA -- A massive fire that started in a chemical factory in western India and spread to six other factories killed at least three workers and injured 13, police said Friday. Police officer Manjunath Shinge said the bodies were recovered early Friday, hours after the fire erupted at the factory in Palghar district in Maharashtra state. The fire was set off by a boiler explosion, but the cause of the explosion was not immediately known. The loud blast was heard several miles away around midnight Thursday and many villagers rushed out of their homes in panic. Several drums containing chemicals exploded at the factory, AP reported. The blaze spread to six other factories before it was controlled by firefighters, police said. The factory is located nearly 110 kilometers (65 miles) north of Mumbai, the state capital. --SPA 12:51 LOCAL TIME 09:51 GMT www.spa.gov.sa/w637359