Matamata-Piako mayor Hugh Vercoe is standing by his district's top cop.
Mr Vercoe's comments come after the Herald revealed last week that Matamata-Piako Detective Sergeant Rod Carpinter was the subject of an internal police investigation after people arrested in two drug busts he led we freed by the courts.
But Mr Vercoe said the region's sub-area manager retained his "full support and confidence".
Mr Carpinter was promoted to the role in June last year, two months before his involvement in a P-lab bust was criticised in court.
In the past week Mr Vercoe has received briefings from police on the 2005 and 2009 busts.