In a statement, New Zealand Rugby said Garden-Bachop died as a result of a "medical event" at the home of a relative. Christchurch police earlier released a statement saying they attended a sudden death in the suburb of Fendalton on Monday evening.
"The death is not being treated as suspicious and will be referred to the coroner," police said.
Garden-Bachop was the son of All Blacks and Samoa representative Stephen Bachop and nephew of All Black Graham Bachop. His mother, Sue Garden-Bachop, who died in 2008 of cancer, represented New Zealand in rugby, basketball and field hockey.
Kei te tangi te ao Whutupōro kua hinga tētahi o ngā tama o te papa takaro.— Super Rugby Pacific (@SuperRugby) The house of rugby laments the passing of one of its sons who graced the playing fields.It is with great sadness that we acknowledge the passing of Connor Garden-Bachop yesterday. He will be remembered… pic.twitter.com/6j9j5Deha3June 17, 2024
Garden-Bachop had played for the Highlanders as a fullback and winger for five seasons but was not going to rejoin the team next season.
He posted on Instagram Saturday, "thank you @highlandersteam for an unforgettable five years. Thank you to everyone in the south for making me feel at home and thank you to the boys I have been honored to share the field with. It's been a pleasure. I will miss you all. Till next time."
The statement from New Zealand Rugby also was signed by the New Zealand Maori Rugby Board, the Highlanders, Wellington Rugby and the New Zealand Rugby Players' Association.
"Connor was a fantastic young player, an exciting New Zealand age-grade representative and a proud Maori All Black," the statement said.
"Wherever he played, he was a committed and popular teammate with infectious energy and someone who could light up the room.
"Most importantly, he was a loving father to his twin girls, a brother, a son and immeasurably loved by all those who knew him."
The statement included a verse in the indigenous Maori language which translates as "the house of rugby laments the passing of one of its sons who graced the playing fields. O Chiefly one, Connor. The rugby world weeps for you. Rest now in peace our friend."