An explosion at a fireworks factory in central Thailand killed at least 21 people on Wednesday, January 17, according to officials cited in local reports.The explosion occurred near Sala Khao township in central Suphan Buri province, according to reports. The cause of the blast remained under investigation.This footage, streamed live to Facebook by a local emergency group, shows the aftermath of the explosion. Credit: Thailand Novice Kaew Suphanburi Highway Rescue Association via Storyful