Former paratroopers who shot dead civilians on Bloody Sunday could be prosecuted.
13 people died in the shootings in the Bogside in Derry in January 1972.
The Sunday Times reports that up to 20 retired British soldiers face being arrested, questioned and possibly charged in connection with the shootings.
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Belfast-based security correspondent Alan Murray says the PSNI and the DPP in the UK have a huge task ahead:
