The Palm Bay Police Department is investigating a house fire that left a woman dead and her brother critically injured as a homicide, authorities announced Thursday.

A recent house fire in Palm Bay has escalated into a homicide investigation. The Monday night fire injured four people inside the home on Balue Lane, according to Palm Bay Police Department. Officials said a man and woman who were siblings suffered severe burns from the incident, and two others were hospitalized from smoke inhalation.

A woman is dead, and another man is in critical condition after a house caught fire in Palm Bay just before midnight on Monday. Nearby neighbor, Frank Guite, says the fire woke his family up.

Fire and police officials are investigating an overnight house fire in Palm Bay. Firefighters responded to the home along Balue Lane SE just before midnight on Monday. Officials say two people were taken to the hospital. Their conditions are not known. Channel 9 was in the neighborhood Tuesday morning and saw officers still on scene.

A 67-year-old woman died Tuesday after a blaze at her home; her brother remains in critical condition with burns, police said.