A free phone line has been set up by police for people wanting to discuss experiences at the secretive Christian community Gloriavale.
The line will be answered by Tasman District Police and has been established to manage the growing number of people wanting to discuss Gloriavale, police said.
Tasman Police District Commander Superintendent Karyn Malthus said the free calling number would make it easier for people in various parts of the country to contact police directly involved in the investigation.
"We will collate any information within our district from where we will determine what, if any, further steps may be required," she said.
Police began an inquiry on Tuesday after numerous media reports of concerns from people who had left the community.