The eight week murder trial of Philip Polkinghorne is nearing a verdict, with the jury beginning deliberations this morning. 

The judge summed up the case yesterday. 

The Auckland eye surgeon's accused of killing his wife, Pauline Hanna; his defence argues she took her own life.  

Herald reporter Craig Kapitan told Ryan Bridge the jury only has two decisions - if it was murder or suicide. 

He says it likely won't be a quick decision, and if the jury need to deliberate past today, court won't sit tomorrow. 

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