No charges against Kahui twins' mother - police (+photos, videos)

Chris Kahui with supporters outside Auckland's High Court. Photo / Greg Bowker

No charges will be laid against Macsyna King, the mother of twins Chris and Cru Kahui, now that their father has been cleared over their deaths, police have said.

Chris Kahui was this afternoon found not guilty of the murders of the three-month-olds, who died in June 2006 as a result of massive head injuries.

His defence lawyers had argued that someone else - probably Ms King - was responsible for their deaths.

The officer in charge of the case, Detective Inspector John Tims, today said he was "disappointed" at the verdict and no more charges would be laid - including against Ms King.

"There is no new information that indicates anyone else is responsible for the death of the twins," he said.

"The Crown solicitor said in his opening and closing address that there is no new evidence to support a charge being laid against the mother, Macsyna King," Mr Tims said.

Jurors left the High Court at Auckland for lunch about 1pm, went into full deliberations at 2pm and emerged at 2.10pm with their verdict.

Mr Tims said nothing could be read into the mere 10 minutes that the jury took to return their not guilty verdicts.

He said he respected the decision but defended the police investigation.

"It has been tough investigation, a tough trial, it's been a tough two years," he said.

"I can honestly say that I've given 100 per cent, my team has given 100 per cent, and we can do no more."

Mr Tims said police were well resourced: "We had a committed team for four months not only once an arrest occurred, we still had a team working on the case."

But during the trial, arresting officer Detective Chris Barry said police were too busy with a wave of violent crime to re-interview Ms King about a development in the case.

Today, Mr Tims congratulated the jury who he said had sacrificed parts of their lives for the last six weeks.

"The last two years have been about Chris and Cru Kahui and nobody else and that has not changed, he said.

"We still have two twins, Cru and Chris, who no-one's been made accountable for their deaths."