NUJ Irish Secretary, and Offaly's Seamus Dooley hopes witnesses come forward with information.
The NUJ is supporting calls by the family of Lyra McKee for witnesses in the Creggan area of Derry to come forward.
It hopes any information over the killing of the journalist on the 18th of April 2019 may help in the prosecution of those responsible.
Public buildings will be lit up in rainbow colours in Derry tomorrow on the second anniversary of Lyra's death.
National Union of Journalists Irish Secretary, and Offaly's Seamus Dooley hopes witnesses come forward with information:
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