18:00Six O'Clock News19/04/2019 Police believe New IRA were behind journalist's killingBBC Radio 4 Duration: 30 minutes Fri 19th Apr 2019, 18:00 on BBC Radio 4 LWAvailable for over a yearListen nowPolice say they believe the dissident group -- the New IRA -- killed the journalist Lyra McKee during riots in Londonderry last nightGenresNewsBrandSix O'Clock News Source: BBC Online