Northern Ireland's police announced on Saturday that two men had been arrested in connection with the murder of Lyra McKee.
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The police earlier stated that the Irish Republican Army (New IRA), a local republican revolutionary paramilitary organisation, was most likely responsible for the attack.
The New IRA is a nationalist group protesting the 1998 Good Friday Agreement that put an end to a nearly 30-year period of violence and terrorist attacks in Northern Ireland. Over the past few years, the New IRA has carried out several terrorist attacks in the region. In particular, on 22 February 2017, its militants attempted to blow up a police car in Londonderry.
From the 1970s to the 1990s, clashes between local Catholics and Protestants occurred in Northern Ireland, accompanied by terrorist attacks. The attacks also sporadically occurred in the 2010s.