Brown was taken into custody on Tuesday in the 7000-block of South East End Ave. and has been charged with two counts of murder and one coun of arson, police said.
The fire broke out in a single-family home that left a mother and her daughter dead and several others injured.
Relatives identified the victims as Ieashia Ford and her 10-year-old daughter Porsche.
The pair were sleeping when someone set the house on fire, according to the family. She went back in to get her daughter, said Darryl Fields, the victims relative. They passed away in the doorway and she had the baby in her arms.
A 10-year-old girl and her mother were killed in an early morning house fire in Chicago's Gresham neighborhood. Family said they believe the fatal fire was intentionally set.
A 10-year-old girl and her mother were killed in an early morning house fire in Chicago's Gresham neighborhood. Family said they believe the fatal fire was intentionally set.