Themen were assaulted in April and May. It's understood the victims were contacted through the dating site.
Several men have been assaulted after being lured by a dating site.
Christchurch police said the victims were told to go to an agreed place in April and May and were assaulted when they got there.
Police said several people were being spoken to and would likely face charges.
Investigations were continuing, a police spokesperson said.
“Anyone planning to meet someone they have connected with online is encouraged to take measures to ensure their safety,” the spokesperson said.
“This includes meeting in a public place, letting your friends know who it is and where you are going and trusting your gut when something doesn’t feel right.”
Yesterday, the Herald reported a West Auckland man had been left covered in blood after being lured with the promise of a date.
The man was attacked by teens armed with bats and is nursing serious injuries.
The Newmarket Business Association says there is no further threat to the area.