Thousands of convictions 'may be unsafe' due to concerns over forensic evidence
Two laboratory workers have been arrested on suspicion of manipulating data from blood samples used as evidence against criminals.
19:53, UK, Tuesday 09 May 2017
By Martin Brunt, Crime Correspondent
Thousands of criminal investigations are being re-examined after suspicions that lab staff tampered with forensic tests.
They could include murder and rape cases where defendants were convicted on evidence ...
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