The government of Mauritius has agreed to reconsider the case of Michaela McAreavey, the Northern Ireland government has said.
The Tyrone woman - the daughter of GAA coach Mickey Harte - was killed while on her honeymoon in 2011.
Two hotel workers in Mauritius were acquitted of the 27-year-old's murder the following year.
Michaela's husband John has sharply criticised the trial, describing it as a "kangaroo court”.
Northern Ireland's First Minister Arlene Foster and Deputy First Minister Michelle O'Neill have confirmed the incident is being looked at again.
Ms O'Neill said: “Michaela McAreavey was a remarkable young woman; adored by her family, friends and students. The taking of her young life was devastating for all who knew her.
“In pursuit of justice for Michaela, the Harte and McAreavey families have fought a decade-long battle with dignity and determination. We gave a commitment to support them in that battle and I’m encouraged that we have now received agreement from the Mauritian government to look again at the case.
“Michaela deserves justice and the very least her family deserve is truth. No stone should be left unturned in pursuing that, and we will continue to do all we can to see it delivered.”
Ms Foster - who is due to step down from her role later today - said she felt a "personal and professional responsibility to do everything possible to bring about justice for a young woman who was so cruelly taken from the many people who knew and loved her".