Luzerne County District Attorney David Lupas told a news conference Monday that authorities were ``continuing to make significant progress ' ' in the case .
Luzerne County District Attorney David Lupas told a news conference Monday that authorities were ``continuing to make significant progress ' ' in the case .
No charges have been filed in those deaths , but Luzerne County District Attorney David Lupas said authorities were " continuing to make significant progress " in the case .