Investigators working to determine cause of fatal fire
WEST ALLIS -- Investigators will be back out at a West Allis duplex Monday, sifting through the damage left behind from a deadly weekend fire.
There were a total of four boys inside the home at the time of the fire, three brothers and one of their friends.
Two of the brothers survived and are recovering at Children's Hospital in Wauwatosa, but one teenage brother and the friend did not survive.
Michael Gonzales, 14 and his friend Issaiha Kobow died inside the burning home.
Investigators say the two were trapped. Fire officials say the flames were so intense, they were pushed back.
The 13-year-old brother, who had just celebrated his birthday a few days before the fire, is now being called a hero.
Officials say he went back into the burning home to rescue his 4-year-old brother.
The fire started around 3:30 Sunday morning in the upper level of a duplex near 57th and Lapham.
The West Allis Fire Department tells CBS 58 they have not determined if the residence had a working smoke detector.