Detective Inspector Warren Hines of West Midlands Police told ITV News that police have arrested one suspect in connection with the deaths of two people at a block of flats in Walsall.
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Health professionals say that 16 people have been struck by the same strain as E.coli after eating blue cheese.
Tom Webb, 22, died after receiving a single stab wound to the chest on January 19 this year.
In the run-up to the Rio Olympic Games, ITV News speaks to four Olympic hopefuls in Team GB. Today we profile BMX rider Liam Phillips.