Double slaying still stumps police LIBERTY - The investigation into the double slaying here of a second - hand clothing store owner and his wife Dec. 10 ' is continuing, a state police spokesman declared Thursday. . . -. Found- deai at their house at the junction of Routes 220 and 173 just outside thier town on Dec. 14 were Jack Bettencourt, 55, and his 74 year - old wife Florence. Bettencourts abandoned car a short distance from the home led to the discovery of the double homicide. Both victimes died of multiple gunshot woulds, police said at the time. - ' Lt. Jerald F. Boutilier of the states criminal division said Thursday it Was the . impression of uWtfstigators robbery was the motive for the crime. The murder scene showed signs" of several shots having been fired. One window had been shot' out. - Police have generally been non - committal as to ,what type of weapon- or wapons were used in the murders, Lt. Boutilier discounted recent rumors that a weapon had been recovered from Lake St. George here. He stated no weapon had been recovered. The police official said it was generally known in this southern Waldo County community that Bettencourt carried large sums of money with him, but that no money was on horn when found by authorities. Boutilier said the Bettencourt house had jfcieen ransacked. To date, Boutilier said, pfficers had conducted interviews with people in thearea, and were presently awaiting analysis reports from the FBI on materials sent them. An assistant attorney general told the NEWS Thursday numerous rumors surrounding the murder of the couple had been circulated in the area. He discounted rumors that a weapon had been fbuftd at Lake St. George. U - If one was found no one told the criminal division or the state police about it, the spokesman declared. President