A man has been charged with sexual violation while he gave massages at a Christchurch dance school.
The 52-year-old was arrested and charged on Thursday.
Detective Senior Sergeant Scott Anderson said police want to hear from anyone who has attended a Christchurch dance school and may know of or have experienced similar behaviour.
"Police are working to build a full picture of this alleged offending," he said in a statement.
"We take complaints such as this very seriously and there are no time limits on reporting such allegations."
Snr Sgt Anderson said anyone who comes forward will be provided with support and advice.
The dance school involved has not been identified.
The man will appear in Christchurch District Court on Friday.
Anyone with information is urged to contact Police on 03 363 7400 or anonymously via Crimestoppers on 0800 555 111.