A jury has found an obsessed and jealous man guilty of murdering his ex-girlfriend in a "brutal and prolonged attack".

Rohi Singh has been on trial in the High Court in Auckland for the murder of Arishma Singh last November.

The court heard he lay-in-wait at her house with a large kitchen knife before stabbing her.

More to come

Rohit Deepak Singh was on trial in the High Court at Auckland. Photo / Greg Bowker