A TVNZ1 documentary on the 1975 disappearance of Mona Blades has sparked new leads.
Mona Blades vanished while hitch-hiking from Hamilton to Hastings on Queen's Birthday weekend 43-years-ago.
Police say there were at least two hours of constant calls from the public following the episode of Cold Case as well as a large number of messages.
Last night's programme revealed that Ms Blades had gang connections and that a number of gang members could've been travelling south that same weekend too.
Watch the episode at TVNZ OnDemand.
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