Police investigating the fatal attack on Wellington journalist Phillip Cottrell say they are frustrated that a number of witnesses changed their evidence during the trial of two men accused of his murder.
Nicho Waipuka, 20, was yesterday found guilty of the manslaughter of Mr Cottrell by a jury at the High Court at Wellington.
His co-accused Manuel Robinson, 18, was cleared of all charges.
Mr Cottrell, who had brittle bones due to a genetic condition, was found fatally injured on Boulcott Street in central Wellington on December 10, last year.
He had been walking home from an overnight shift from his job at Radio New Zealand.