In November 2006, it was revealed that several other young girls had received phone calls similar to the ones Mihaljevic received in the weeks prior to her abduction. The unknown male caller claimed that he worked with the girl’s mother and wanted help buying a present to celebrate her promotion. The girls who received these calls lived in North Olmsted, a suburb near Bay Village; some had unlisted phone numbers. This new information was considered significant by investigators. Mihaljevic and the others who received such calls had all visited the local Lake Erie Nature and Science Center, which had a visitors' logbook by the front door. The girls may have signed the book and added personal information including phone numbers and addresses.