Two women have also been charged with murdering Tongia, a 35-year-old and a 24-year-old.
A 20-year-old woman, who is accused of being an accessory to Tongia's murder on December 20, grinned and mouthed words to her supporters as she stood in the dock at the Wellington District Court on January 21.
Police also revealed last month they had found a firearm during a search in Wilton they believed was linked to Tongia's death, and it is being forensically analysed.
Anyone with information that may assist is urged to contact Police on 105, quoting file number 201220/8063