As stated by Police Commissioner Mike Bush:
The enquiry into the Christchurch terror attacks has the largest number of detectives and specialists we have ever deployed on an investigation.
We have more than 250 officers and support staff dedicated to this enquiry.
This is now an international investigation which includes staff from the FBI and Australian Federal Police on the ground in New Zealand, as well as investigators assisting in Australian states.
/NZ Police Public Release. View in full .