A man who was "driving dangerously at excessive speeds" has crashed four times across east and south Auckland, injuring a motorcyclist.
Senior Sergeant Graeme Fleming said Counties Manukau Police were appealing for witnesses to a number of serious driving incidents across the district this morning.
The alleged driver is now in custody.
After 8.40am police received reports about a man behaving erratically in the Mt Richmond area following a reported family harm incident.
Shortly later police began receiving reports about a blue Holden Commodore being driven dangerously in the Otahuhu area on Great South Road.