A senior adviser to Pope Francis has said he is worried about the anti-Muslim rhetoric of presumptive US Republican Party candidate Donald Trump.

In an interview with RTÉ News, Cardinal Seán O'Malley also warned against scapegoating Muslims following this week's atrocity in Nice and other terrorist attacks on the west.

Speaking in Knock, Co Mayo, the cardinal recalled that the Irish were once blamed for America's ills.

And he urged Catholics to heed the advice of Pope Francis to strengthen dialogue with Muslims.

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