Documents and items of interest have been seized by police as part of an investigation into the collapse of the CTV building.
Four search warrants, which Detective Superintendent Peter Read says form part of the ongoing investigation, have been executed by Canterbury Police.
The seizure of documents and items of interest were a result of these warrants.Engineering consultants Beca have been engaged to provide Police with expert opinion to the investigation.
Mr Read said the investigation involved consideration of a large amount of complex, technical information to inform police on recommendations about any criminal liability.
In September 2014 New Zealand Police announced that it would be advancing a criminal investigation after assessing a large amount of information regarding the collapse of the CTV building during the February 2011 earthquake.
