Butler's family and partner have previously said it was hard having to wait for police to complete their investigation.
Butler's partner, Dana Corbett, said she and the family were pleased there had been an arrest but it didn't make the grieving process any easier.
"It's not changed anything for me. At the end of the day he is still gone."
She said the family remained close and got together regularly to remember Butler, the latest occasion being on April 29, which would have been his 38th birthday.
Neville Butler with his partner Dana Corbett. Photo/supplied
Corbett said they went to the home of Butler's mother's, Julie Donner, and had food and drink and visited his grave together at the cemetery.