Australian Brenton Harrison Tarrant, 28 had initially been charged with one count of murder after his arrest the day of the March 15 massacre.
Fifty people were killed in the two mosques and dozens of others were shot and wounded.
Tarrant won’t be required to enter a plea at the which will take place in Wellington on Friday morning local time.
Police said in a brief statement that they were considering filing more charges against Tarrant but couldn’t comment further as the case was before the court.
Tarrant’s first appearance was on the day after the attacks in the Christchurch District Court. His case has now been moved to the High Court due to the seriousness of the charges.
Tarrant has reportedly been moved to a high-security prison in Auckland, which is why he’ll appear via video link.
During the scheduled court hearing, media photographs won’t be allowed and reporting on the proceedings will be severely restricted under New Zealand law.
The intent of the law is to avoid the possibility the reporting and images would taint the views of potential jurors before they hear evidence in court.
Judge Cameron Mander said in a note that the brief hearing will mainly be about the accused gunman’s legal representation.
Tarrant earlier dismissed lawyer Richard Peters, who was assigned to represent him during his district court appearance. Peters said Tarrant told him that he wants to represent himself.
Many worry that Tarrant will try to use his trial as a soapbox to push his white supremacist views.
The judge said he had received applications from 25 media organizations to take film, photographs or audio recordings of Friday’s hearing but had denied all of them. He said reporters could remain throughout and take notes, although would be restricted in what they could report.
He said media could still use