Lomu died suddenly this week, aged 40, after suffering for many years from a chronic and serious kidney disorder.
The All Black great is survived by his wife, Nadene, and their two young children.
In a statement released this morning, Lomu's father-in-law, Mervyn Quirk said the family wanted to thank everyone who had expressed their sympathies at an incredibly difficult time.
"While we grieve for a husband, father, son, brother and good mate, we know that many people in New Zealand and around the world are mourning a very special individual.
"We are continuing to discuss with various parties, how we can best celebrate Jonah's life and allow people to commemorate his achievements and contributions during an all too short time on this earth."
Quirk said details of a memorial service would be announced within a few days.