The director general of Health has confirmed Covid-19 has been detected within the Killer Beez gang.
The Herald understands both of Masterton's Covid-19 cases are Killer Beez; one is the daughter of a senior member.
Dr Ashley Bloomfield says it is his understanding one of the cases in Masterson had contracted the virus from a tangi in Auckland.
A number of gang members gathered in Masterton between November 5 and 7, travelling from all over the country - including the South Island.
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Wairarapa Area Commander Inspector Scott Miller said it was attended by members from throughout Wairarapa, as well as other areas of the lower North Island and upper South Island.
Miller says police were "overall satisfied" with the behaviour of attendees, but remained highly visible in the area.
"There were no significant incidents of note and no arrest made."
A social media post claims the two cases visited Woodville, and also attended a tangi in Martinborough last week.
Both cases are isolating in Masterton, according to the Ministry of Health.