Forensic investigators carry out detailed examinations at a house in Auckland Road at Mexborough near Doncaster after the murder of a 48-year-old man.
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Footage obtained in an undercover investigation by charity Animal Equality shows farm workers kicking and prodding the pigs with pitchforks.
Police stop and search needs urgent reform - according to a Bradford MP who says black and Asian communities are unfairly targeted.
Armed police with dogs arrested a 25-year-old man at the University of Lincoln earlier today.