Police arrest a woman in connection to Thursday's deadly fire in a Brooklyn apartment building.
22-year-old Joanna Mei is charged with murder and arson.
Police say 56-year-old Feng Xu and 58-year-old Xi Huang were found dead on the third floor of the building on 11th Avenue in Dyker Heights.
Law enforcement sources say Mei set the fire in the hallway because she was upset with the amount of garbage on the third floor.
She also lives in the building.
Sources also say they found video of Mei leaving the building around the time of the fire.
She told investigators that she tried to put the fire out after setting it, but failed.
A 4-year-old girl and and 3-month-old boy were taken to the hospital for smoke inhalation.
They are among the seven injured.
The building had no working smoke detectors.