An early morning police operation in Christchurch targetting people who had not shown up to court has resulted in more than 30 arrests.
About 70 police officers began door-knocking at 5.30am on Tuesday as they followed up on 150 active arrest warrants.
District Commander Superintendent Gary Knowles says each of the accused is a potential criminal threat to people in Christchurch.
"We have incidents of domestic violence, a lot of driving charges, some serious assaults, some unpaid fines, some people who've been sentenced to probation and court orders who just don't go."
Superintendent Knowles says those arrested were to appear in court on Tuesday afternoon.