Five men arrested for questioning about the murder last year of Derry man Emmet Shiels have been released from custody.
The PSNI released the men without charge.
A file is being sent to the CPS (Crown Prosecution Service).
Mr Shiels, 22, from Tyrconnell Street in the Bogside, was shot after he became embroiled in a row with masked gunmen in June last year.
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Two other people have been charged in connection with his murder.