John and Michaela McAreavey were on on their honeymoon in Mauritius when she was strangled in her hotel room.

Two hotel workers were tried for murder. They were found not guilty in 2012.

Mr McAreavey, who remarried in September last year, has travelled back to the island with his sister Claire and Michaela's eldest brother, Mark Harte, to make a direct appeal to the islanders for help.