The gathering of complex scientific evidence has delayed the start of double murder accused Mark Lundy's trial to February next year.
Lundy appeared in the High Court at Wellington today for a case review hearing.
He is facing a retrial for the murders of his wife Christine and their 7-year-old daughter Amber, after Law Lords at London's Privy Council quashed his convictions last year. That trial had been set to start in June but has now been delayed.
From March 31 the court will hear pre-trial arguments about non-scientific evidence and a further hearing on March 20 will concentrate on scientific matters, Justice Ronald Young says.
It is then intended arguments about this evidence will be heard in June.