Kahui inquest would not target culprit 

The Chief Coroner says an inquest into the deaths of the Kahui twins would focus on what happened, not who is culpable.

The three-month-old twins, Chris and Cru Kahui were murdered in June 2006.

Last week their father Chris Kahui was found not guilty of their murders and police said they will not charge anyone else unless there is new evidence.

Judge Neil MacLean says it is likely there will be a coronial inquest to answer questions the criminal investigation did not.

MacLean says the scope of the inquest is potentially quite wide ranging as they will want to know what, where, how and why the deaths happened and all the surrounding circumstances.

The police invstigation into the babies' deaths has been criticised by criminal lawyer Chris Comesky who believes public pressure to charge someone for the murders had a negative impact on the inquiry.

"They sped the inquiry up. They only spent five months investigating it. They could've waited a lot longer," he says.

Comesky says the police should have also maintained an open mind throughout the investigation.

"They must've known that charging Chris Kahui there was just an equal case against any of the Kahuis that lived at that address...They should've known that the jury wouldn't stand for just guessing that it might've been Chris Kahui when it may have been equally someone else".

Comesky says police have now backed themselves into a corner because prosecutors in court said King did not commit the murders, ruling out them now charging her.

Meanwhile, Macsyna King's lawyer has criticised the prime minister for speaking publicly about the Kahui murder case.

Clark told TV ONE's Breakfast programme that the case needs to be revisited and police could examine other angles over the deaths of the twin babies.

But King's lawyer Marie Dyhrberg says Clark should not get involved in such a high profile case.

Dyhrberg says it would not be right for police to reopen the case because of demands from political and pressure groups.

"The prime minster suggested that the file ought to be looked at in the full light of day, whereas in fact the police and the Crown has spent 18 weeks investigating (and) two years preparing for the trial," she says.