UPDATED 11.24AM New Zealand's first sentencing of a man charged with possessing terrorist propaganda has been put off until later this month.

Niroshan Nawarajan will spend another three weeks in custody until his sentencing.

The 27-year-old was arrested in January after he walked into the US Consulate in Auckland wearing an ISIS t-shirt and asking if the building was bomb proof.

Police later found in his possession several videos depicting gruesome deaths.

Judge Russell Collins has adjourned the case until June 23rd.

The charge of possessing objectionable materials is normally used for cases involving child pornography.