The man accused of carrying out the twin massacres at New Zealand mosques in March will become the first suspect charged under the country’s anti-terrorism laws passed after the 9/11 attacks.

The decision will be closely watched around the world as a test of bypassing regular criminal statutes for an apparent hate crime and opting for terrorist charges, which opens the door for examinations of ideology and political motivations during the trial.

Critics say a prosecution case based on “engaging in a terrorist act” would add no more years to the possible sentence for the suspect, 28-year-old Brenton Tarrant.

Read more: The Washington Post