The maximum penalty for those charges is 14 years' jail.
His name and identifying details were suppressed last week - and today, Judge Clare Bennett extended the interim name suppression order.
At last week's hearing, the Herald opposed name suppression.
The accused man first appeared at court one week after a terrorist went on a stabbing frenzy in New Lynn.
Defence counsel Peter Syddall argued for name suppression last week, saying the man or his family could become targets of vitriol or threats.
In her decision to extend interim suppression, Judge Bennett today referred to concerns in the community after the New Lynn attack.
But apart from a broad description of the charges faced, all details about police allegations were suppressed.
The 19-year-old was remanded in custody, meaning he is not on bail.
His next court appearance will be on September 23.