A dad was seen trying to bust in the windows of his home to rescue his trapped family as their house erupted in flames in Memphis.
The Memphis Fire Department (MFD) said the two youngsters, aged eight and 10, and a 33 and 62-year-old all perished as the blaze ripped thorugh a home in a residential neighbourhood of Frayser, Memphis, Tennessee at midnight local time (6am GMT).
A third victim, understood to be the father, was rushed to hospital in critical condition after he tried to tackle the flames.