Awanui Black's widow alleges the prominent Māori leader was at the centre of a child-sex ring (file photo).

The woman who alleges her dead husband was part of a Bay of Plenty paedophile ring says she has no evidence that such a ring exists.

Anihera Black accused her former husband, well known Tauranga man Awanui Black of being a paedophile in an emotional video broadcast on Facebook and said he was part of a ring that involved a number of high profile Bay of Plenty men.

However, in an interview with Stuff, Anihera said she knew of no victims of sexual assault by the men she alleges were part of the ring.

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She provided no further evidence to back her claims, but Anihera said she had been approached by three alleged victims of her husband.

The disclosures about her husband prompted the broadcast of her allegations on Facebook. The complainants have not made a formal statement to police, however on Monday police said they were investigating and have spoken with Anihera.

Ngāi Te Rangi Iwi Trust Board has offered an $11,000 reward for information that leads to a conviction.

Awanui died in 2016 due to kidney problems and was a prominent Māori leader and public figure in Tauranga.

However, in her video Anihera labelled him a "predator, pimp and ringleader of one of many child sex rings in his beloved Tauranga".

In her message on Facebook, Anihera said the pain and suffering her husband caused would live on for generations to come.

"I wondered why Awa invited so many young people through our homes over the years ... I know differently now."

She apologised for what Awanui had allegedly done and asked all his alleged victims to speak up.

A prominent Tauranga mural depicting Awanui performing a haka was last weekend painted over by its creator, artist Mr G, in response to the allegations from Anihera.