Authorities in North Little Rock are investigating a deadly house fire Wednesday morning. Fire Chief John Pflasterer told KATV fire crews received a call around 2:56 a.m. of a structure fire in the 5600 block of Alta Vista Dr. Chief Pflasterer said after crews extinguished the fire, they searched the house and found four people inside. Three people were dead. A 17-year-old was also taken to the hospital with injuries but is expected to survive. Chief Pflasterer said the fire does not appear to be suspicious.