4 Adults, 2 Children killed in house fire in Alcoa, Tennessee

A tragedy that 4 adults, 2 children died in a house fire in Alcoa, Tennessee this past Sunday morning.

This is a link to the story:

http://www.wjhl.com/top-news/regional/multiple-fatalities-in-east-tennessee-house-fire/1133957525

How could such a tragedy occur? 

Please keep family and friends in our prayers.