Three people whose bodies were found in a burned house in Martin County last weekend were shot and stabbed before the fire, according to authorities.
State police on Wednesday announced a second arrest in the triple-homicide case.
Amanda Bowen, 26, of Inez was charged with three counts of murder and one count of first-degree robbery, police said.
Police earlier arrested Jack D. Smith, 41, of Inez. Smith is charged with three counts of murder, first-degree robbery, tampering with physical evidence and three counts of drug possession.
Firefighters responding to a blaze at a house just outside Inez early Saturday found the bodies of Cainie Johnson Jr., 46; Tina Yvonne Goble, 42; and her granddaughter, Trinity Janae Maynard, 8, in the house.
Preliminary autopsy results show each was shot twice and stabbed, Martin County Deputy Coroner Ronnie Mathis said Wednesday.
Mathis said the three were dead before the fire started. That raised the possibility that the assailants set the fire to try to conceal the homicides.
Tony Tackett, the state police detective handling the case, said in an arrest warrant that Bowen and Smith stole several items from the house, including medication and jewelry.
Smith and Bowen put knives, stolen items and Goble's bloody clothes in a bag and took them from the house, Tackett said in the warrant.