The 29-year-old accused was admitted to Auckland City Hospital in a critical but stable condition following the incident.
He remained under police guard at the hospital and had his first court hearing with Judge Josephine Bouchier from a hospital bed on March 26.
Herman Bangera and Elizabeth Bangera were stabbed to death. Photo / SuppliedAnother person who was hospitalised with superficial injuries following the March 19 attack has been discharged and interviewed by detectives.
The Herald understands this person may have been a passer-by who tried to intervene.
Detective inspector Scott Beard described the incident as "an absolutely tragedy for this family, their friends and wider community".
Police at the scene where two people were stabbed to death in Epsom. Photo / George Heard