A 13-year-old's been charged with murder over the death of another teen in Dunedin yesterday.  

Police say they've been aware for some time of anti-social behaviour at the city's Great King Street bus hub - and they arrived at the scene within one minute of the 16-year-old being stabbed. 

Dunedin Mayor Jules Radich told Heather du Plessis Allan “We instigated private security patrols, which have provided more eyes on the street.” 

Radich said that although private security don't have police powers, they are the eyes on the street, who provide pastoral care and give people someone to talk to. 

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