Mourners are beginning to gather in Tyrone for the joint funeral of Dan and Christine McKane.
The brother and sister died in a crash near Aughnacloy, along with their aunt, Julia McSorley, last Thursday.
Their funeral mass is being held at The Church of The Immaculate Conception in Strabane from midday.
Four other family members were also injured as they were making their way home from a funeral in England.