A 33-year-old was arrested after crashing his car into a power pole.
At first he fled the scene, only to return later.
It then emerged he was subject to a zero-alcohol licence and when tested he blew more than four times the legal limit, Dinnissen said.
A 16-year-old was also pulled over past their curfew late on Saturday and blew a breath-alcohol reading of 390 micrograms - drivers under the age of 20 could not consume any alcohol.
Dinnissen said the incidents were a concern for officers in the city and drink drivers would continue to be targeted.