The child was taken to Airedale General Hospital by ambulance where he was pronounced dead.
A murder investigation was launched by West Yorkshire Police's Homicide and Major Enquiry Team and at 11:30am this morning and a 32-year old man was arrested from an address in the Ingrow area of Keighley.
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A man has been arrested as part of an investigation into the murder of a man in Sheffield.
Jon Mitchell has Thursday's late weather forecast.
A Bradford man who stored a haul of illicit tobacco in a pushchair has been given a suspended prison sentence.