a mentally ill father-of-three who died in police custody was handcuffed for six hours , wet himself after being denied access to a toilet , and was repeatedly punched by officers , it was claimed today .
kingsley burrell , 29 , was taken into custody on march 27 2011 after calling police to say he was being threatened a gun while out shopping in the centre of birmingham .
he was arrested in the haymer corner shop in winson green while he was going swimming with his son , four , and niece .