The six victims are in their 20s and 30s, and all have extensive burns, according to Dr. Kevin Foster, director of the Arizona Burn Center.

Six survivors of a massive fireworks explosion in Hawaii have been flown to Phoenix for treatment. This comes as we're learning a three-year-old boy died on Monday as a result of the blast, raising the death toll to four.

A three-year-old boy has died after a New Year's Eve fireworks explosion in Honolulu, Hawaii. The blast killed three women and left at least 20 people injured