Authorities have identified the mother and son who died in a weekend house fire in Waterloo.

The victims were Ashley Smith, 32, and her 9-year-old son, Jaykwon Sallis, Waterloo Fire Rescue officials said. According to a press release, autopsies determined that both victims died from injuries suffered in the fire.

Smith and Sallis were among five people inside the two-story home at 536 Dawson St. when the fire broke around 6:30 AM on Sunday (April 22, 2018). The other residents -- a man, woman and girl -- got out of the burning structure through an upstairs back window. Waterloo Fire Chief Pat Treloar earlier had said the two females were taken to a local hospital to be treated for injuries.

According to Treloar, firefighters found the front of the house fully engulfed when they arrived at the scene. He said the bodies of Smith and Sallis were discovered inside the home after crews gained control of the blaze.

Investigators are still trying to determine the cause of the fire.