A former Napier councillor acquitted of murdering his second wife, is now asking Canada's Supreme Court to formally exonerate him

Peter Beckett's wife Laura Lett-Beckett, drowned in 2010 in Canada's Upper Arrow Lake.

He was arrested a year later and convicted of murder, before the charge was thrown out.

Beckett is now asking the Supreme Court to find him not guilty once and for all.

It comes after the Crown lodged an appeal against his conviction being overturned.

If the Supreme Court decides not to hear the Crown appeal, the acquittal will remain.