A closed court has seen graphic video of a 2021 terrorist attack in Auckland at New Lynn Countdown. 

A coronal inquest began today into the stabbing of six people at the supermarket.

Officers monitored Sri Lankan Islamic State supporter, Ahamed Samsudeen - then shot him dead.

Newstalk ZB's Jordan Dunn has been at the inquest.

He says police revealed why they didn't originally follow the 35-year old into the store. 

"They didn't think it was a target-rich environment, which essentially means that they knew he was capable of carrying out an attack. They thought if he were to do that, that it would be in a more densely populated area."

LISTEN ABOVE

• Survivors of New Lynn terror attack seek public hearing and answers
• 'Unresolved factual issues': Inquest to be held over Auckland supermarket terror attack
• Graphic footage of New Lynn terror attack shown in closed court, stabber donned red glove