Dramatic footage has emerged from China of a fire at a clothing factory caused by an explosion which killed at least six people. <br /><br />The video, filmed in Zhengzhou, Henan Province last Saturday, shows thick smoke rising into the air as flames engulf part of the building. <br /><br />The explosion reportedly happened on the fifth floor<br /><br />It took more than 140 firefighters to control the blaze and, tragically, six people were killed and seven were injured.