Milwaukee Police are investigating a two-alarm fire that happened Thursday night.
It happened just before 11 p.m. at 35th and Auer, in the both the upper and lower levels of a duplex.
10 people were taken to the hospital with minor injuries. Many had to be rescued by firefighters.
"Lives were legitimately saved here tonight, and I'm extremely proud of my companies," Chief Aaron Lipski said.
"They were just heroes. You know, I was praying so hard," said neighbor Leon Parrish.
In its investigation, the Fire Department determined there was no working smoke detector in the house and deemed the home a total loss. The Red Cross is in touch with the family and plans to offer support.
"It’s a shock to see how that place catch fire so fast, how she escaped with the kids," said neighbor Phecner Desauguste.
Milwaukee Fire said since people were trapped inside the police department's arson unit is involved. Circumstances leading up to the fire are still under investigation.
Anyone with any information or was a witness to this incident is asked to contact Milwaukee Police at (414) 935-7360 or Crime Stoppers at (414) 224-TIPS, or use the P3 Tips App to remain anonymous.