According to authorities one person died, two others critically injured and three suffered minor injuries Friday in an explosion at an Ultratec, a fireworks manufacturer in Madison County.

The explosion happened sometime during the process of manufacturing pyrotechnic.  Why or how it happened is unknown at this time.

According to witnesses explosions are not unusual at the fireworks facility.  The name of the person who died in this explosion has not been released at this time. Read more here.