DHAKA, Dhu-AlHijjah 09, 1437, September 11, 2016, SPA -- The fire at a food and cigarette packaging factory in Bangladesh that killed at least 26 people has been extinguished, but heavy smoke and the risk of the building collapsing further were hampering the search of the premises, officials said on Sunday, according to Reuters. Saturday's blaze was the country's worst industrial accident since the Rana Plaza building collapse of 2013 that killed 1,135 garment sector workers, and raises further questions about Bangladesh's safety record. "The building is hot and it is not possible to enter," said Ajit Kumar Bhoumik, a senior official with the fire department, early on Sunday. "Also there are huge cracks in the building, so it is very risky to enter without precautionary measures." He said that the death toll from the blaze had risen to 26. Some fear it could increase further once search efforts begin. The cause of the fire in the Tongi industrial zone about 20 km (12 miles) north of the capital, Dhaka, was not immediately known, but officials said a boiler explosion probably triggered it. The blaze broke out as workers prepared to swap shifts in the early hours of Saturday morning. --SPA 11:23 LOCAL TIME 08:23 GMT www.spa.gov.sa/w