Police have named two people found dead at a house on Chalwood in Deighton, Huddersfield.
Efias Rusukira, 50, and Grace Rusukira, 47, were discovered shortly before midnight on Wednesday.
Officers say an inquest will be opened in due course.
Detectives are not looking for anyone else in connection with the deaths.
Anyone with information about the deaths should contact Detective Sergeant Simon Leek at West Yorkshire Police Homicide and Major Enquiry Team on 01924 334744.