Kaleo's devastated mother, Loviani Kaitu'u, said investigating police had taken the camera, which also had footage of the family singing together on a train ride the day before.
"I can't wait to have that camera back because it has so many nice memories on it, but I will ask the police to delete that clip of my son - I do not want to see that again," she said.
Raised in Mangere, the popular De La Salle College student had recently moved to Australia with his mother and four younger siblings.
The 100kg teen was a skilled boxer who had recently fought in his first amateur bout and was going to compete in the upcoming Golden Gloves competition.
Proud uncle, David Tua, said Kaleo would have been a top professional boxer.
"He was a great boxer and would have been better than me; he was going to go all the way," Tua said at Kaleo's burial on Wednesday.
At the burial, Tua and other family members replaced the soil in Kaleo's grave while white doves were released in his honour.
Hundreds of mourners attended the burial this week at Mangere Lawn Cemetery. Previously, memorial services were also held in Sydney and Ipswich, Brisbane, where he died on May 9.
Loviani said the huge turn- out showed how many lives her son had touched.
"He was the kind of boy who would talk to anyone. There were homeless people he would talk all the time to and lawyers he would train with - he touched people from all walks of life."
The coroner said Kaleo had an enlarged heart, but biopsies have been taken to test for pre-existing conditions and heart disease.
