The body of Michaela McAreavey is to be flown home from Mauritius today.
DNA tests on forensic evidence taken from her body are expected to be complete in the coming days.
The 27-year-old from Co. Tyrone was strangled to death while on honeymoon in Mauritius.
It is thought skin tissue found under her fingernails could strengthen the investigation.
Yesterday, three men were charged in connection with the murder.
Michaela and her new husband John had planned to set up home in Laurencetown near Banbridge in County Down.