In Bangladesh, at least 23 people have been killed and 70 others injured in a huge fire that broke out at a packaging factory in Tongi, north of the capital Dhaka.<br/> <br/>Police said about 100 people were in the four-storey building at the time, including machine operators and guards. <br/>The blast was caused by an explosion in the boiler room, at the start of the working day. <br/><br/>Firefighters are struggling to bring the blaze under control. <br/> <br/>Local fire and civil defence chief Anis Ahamed said there were now 20 fire trucks working to extinguish the fire.