Arlington firefighters said at least two people were killed and two others were injured in a fire at an apartment complex Saturday afternoon.
Twenty-nine-year-old Kim Moore and 11-year-old Erica Joyner were killed in the blaze. A man taken to Parkland Hospital remained in critical condition Sunday. Another woman was treated at a hospital for minor burns.
Assistant Fire Chief Jim Self said firefighters got a call about heavy smoke and flames at a building at the Tanglewood Apartments in the 2000 block of East Abram Street at about 1 p.m.
"As the very first units got on scene, within five minutes, most of the second floor was well involved," he said.
Twenty apartments were destroyed in the fire.
"There was heavy smoke, heavy fire in virtually all of the apartments," Self said.
Lisa Roberts, the apartment assistant manager, a 29-year-old woman who is a close friend was also killed in the blaze.
"We did everything together," Roberts said. "We ate together, we'd go places together. She's like my daughter."
Investigators said the fire may have began at a breezeway but said they do not yet know what sparked it.
Self said it is unusual for a fire of that magnitude to spread so quickly.
"That volume of fire... we were here very quickly," he said. "It spread so fast. I mean, we're very interested to find out the cause."
Fire investigators said they believe that two people who remain unaccounted for were not at home at the time of the fire.
NBC DFW's Kim Fischer contributed to this report.