In a statement provided to the Irish News, using what the paper described as "a recognised codeword", the dissident republican organisation offered "full and honest apologies" to her family and friends.
The New IRA militant Irish nationalist group has apologized for the killing of journalist Lyra McKee - its first acknowledgement that one of its members was involved, the Irish News newspaper reported on Tuesday.
In the statement, the group, which formed in 2012 as an offshoot to the Irish Republican Army, claimed "volunteers" were deployed after British forces "provoked rioting".
'We have instructed our volunteers to take the utmost care in future when engaging the enemy, and put in place measures to help ensure this.
Journalist Lyra McKee smiles outside the Sunflower Pub on Union Street during a portrait session in Belfast, Northern Ireland May 19, 2017.
Justice Issad Rebrab et les frères Kouninef, arrêtés
L'Algérie est le théâtre depuis le 22 février de manifestations massives déclenchées par la candidature à un nouveau mandat de M. Le Pdg du groupe Cevital et les frères Kouninef, ont été arrêté par la brigade d'investigation de la gendarmerie à Alger.
Both men were released without charges on Sunday, with no further information provided as to whether they were suspects or had been cleared of wrongdoing.
"My challenge is, how do I convert that community intelligence and information into raw evidence that allows me bring offenders to justice", Detective Superintendent Murphy said.
McKee, 29, was shot in the head late on Thursday by dissident republicans linked to the New IRA paramilitary group as they clashed with police in Northern Ireland's second city, also known as Derry.
"House-to house enquiries are continuing, and all of that is to be welcomed".
"My appeal today to witnesses who haven't come forward to us is simple". Come and talk to me.
On Monday a crowd gathered outside the Londonderry office of Saoradh, marking its walls with handprints of red paint in an act of protest.
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"Lyra's murder has shocked not just people across this city, but people around the world and there has been a global wave of shock and sympathy from her colleagues in journalism, politicians, church and community leaders".
The killing was condemned by all the major political parties as well as the prime ministers of Britain and Ireland.
Several republican groups have opposed Northern Ireland's peace process which culminated in the 1998 Good Friday agreement, ending decades of violent conflict.
Colum Eastwood said that Sinn Féin and the DUP had a responsibility to take the "poison out of politics" to find a solution to the political stalemate. Lyra, tragically, was a random victim and I need the public to continue to support us. "You don't shoot accidentally".
The group of friends have pledged to do more in Lyra's memory.
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