<div><b><br></b></div><div><b><span style="font-size: 1rem;">A massive fire broke out at an oxygen plant following an explosion&nbsp; in Kadam Rasul (Keshabpur) area of Chattogram's Sitakunda upazila on Saturday afternoon.</span><br></b></div><div><br></div><div>The fire started at Seema Oxygen Plant around 4:30 pm after a big bang, Sitakunda Fire Service officer Md Fazle Rabbi said, reports UNB.</div><div><br></div><div>On information, three firefighting units rushed to the spot and are trying to bring the blaze under control, he added.</div><div><br></div><div>However, the reason behind the blast and fire could not be known immediately, said the fire official.</div><div><br></div><div>bnbd24/fas</div>