A woman has been arrested after the alleged fatal stabbing of her partner at a holiday park in Kaikoura.

Detective Senior Sergeant Ciaran Sloan said police were called to a holiday park in Kaikoura about 7.45pm yesterday after reports of the stabbing in a campervan.

When emergency services arrived a 58-year-old man was confirmed dead.

A 59-year-old woman was arrested following the incident.

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Police confirmed the dead man was the woman's partner.

Many witnesses are still to be interviewed by police as inquiries continue.

A scene examination will also continue today, Sloan said.