Brierley was sentenced to 14 months with a non-parole period of 7 months last week.
The Serious Fraud Office says it is looking into "multiple complex cases of potential fraud".
Video shows the man scaling the building on about the 10th floor - hanging on to a balcony as he attempts to descend.
More than 120 cars travelled to the tangi for an 18-year-old who was killed in a crash last week.
Kaimana Paul died during an incident outside the Glasshouse Bar in September 2019.
But they aren't seeking anyone else in relation to her death.
This is breaking news - more to come.
Vikhil Krishna, 23, pleaded not guilty today in the High Court in Auckland.
Police were called to a property at around midnight following a report of a family harm incident.