Detectives are questioning a 43-year-old man about the deaths of two people found at a block of flats in the West Midlands.
Police arrested the suspect at the scene on Saturday after conducting house-to-house enquiries.
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A mother feared to have been planning to travel to Syria with her four children has been charged with child abduction.
Dimitri Diatchenko was sentenced to 60 days community service after eating the animal and sending his ex graphic photos of what he did.
The starving toddler has been taken into care following the incident in Chile - but it is thought the dog may well have saved his life.