Auckland Police have arrested and charged a teenager in relation to a series of aggravated robberies and serious assaults throughout the city.
The incidents took place in Epsom, Mt Roskill and Sandringham on Monday, June 3 and Monday, June 10.
A vehicle, police believe was involved in the incidents, has also been seized.
The first attack took place after midnight on June 3 when four men approached a man on King George Ave, Epsom.
One offender struck the man with a hockey stick and stole his mobile phone, police said. The offenders then reportedly fled in a Subaru Legacy station wagon.