Detectives have started a murder investigation after a 76-year-old woman was found dead in Hawaorth in Keighley yesterday.
An 80-year-old man has been arrested on suspicion of murder and is currently in custody.
He was found unconscious at the wheel of his vehicle on Keighley Road in Colne on Saturday night and taken to hospital. He remains in a serious but stable condition.
A post mortem has taken place but the cause of death is still to be established.
Anyone with any information which could assist officers is asked to contact the Homicide and Major Enquiry Team on 101 or Crimestoppers on 0800 555111.