A grand jury has indicted 39-year-old Brendan Banfield in the stabbing death of his wife and murder of another man in the couple's bedroom 19 months after the killing, according to Virginia's Fairfax County Commonwealth's Attorney Office.Banfield is accused of fatally stabbing 37-year-old Christine Banfield and shooting Joseph Ryan, 38, in February 2023.Banfield's charging in the case comes months after the family's 24-year-old live-in au pair was charged in the case."We know Brandon Banfield and Juliana Magalhaes, the family au pair, were involved in a romantic relationship at the time of the murders," Fairfax Police Chief Kevin Davis said at a press conference Monday.Evidence photo shows Brendan Banfield and his au pair, Juliana Peres Magalhaes.Fairfax County Commonwealth Attorney's OfficeBanfield was indicted on four charges of aggravated murder and one charge for the use of a firearm in the commission of a felony.He is accused of the premeditated murder of the two.MORE: Customer fatally shoots 18-year-old Waffle House employee, suspect at large: PoliceIf convicted, he could face a life sentence without the possibility of parole.
For the firearm charge, he could face a mandatory minimum of three years."The great investigative work of the Fairfax County Police Department led us to new information which was instrumental in securing today's indictment," Fairfax County Commonwealth's Attorney Steve Descano said during the press conference.Brendan Banfield was indicted by a grand jury for aggravated murder in the February 2023 killings of Christine Banfield and Joseph Ryan.WJLAInvestigators would not reveal what new information led to Monday's arrest.ABC News has reached out to an attorney for Brendan Banfield for comment.MORE: Teen screamed he was 'going to die' after being shot in face while looking for place to take homecoming picturesThe Banfield couple were married and living in their family home with their then-4-year-old daughter at the time of the murders.Pol...