Police have received more than 50 calls from people offering information about the disappearance of Amber-Lee Cruickshank, since a $100,000 reward was offered a fortnight ago.
Two-year-old Amber-Lee Cruickshank went missing from a Cornwall Street property in Kingston, on the shores of Lake Whakatipu, on 17 October 1992.
The toddler and her family planned to stay at the property, where a number of people were socialising at the time of Amber-Lee's disappearance.
Police believed the girl might have been a victim of foul play.
Detective Inspector Stu Harvey said officers were looking into the tip-offs.
"Police have received in excess of 50 calls from people offering information since the reward was announced on 13 April 2021," Harvey said.
"The investigation team is making contact with all of these people and will examine, evaluate and review this information.
"The offer of a reward will remain in place until 13 October 2021."
Police will pay up to $100,000 for information which led to the identity and conviction of anyone responsible for Amber-Lee's disappearance.