An officer on the recorded call says, "This might be for real."
After police arrived at the house, women can be heard crying in the background. Then an officer tells the dispatcher: "We found 'em. We found 'em."
As Knight remains hospitalized, Berry and DeJesus returned home Wednesday to reunite with family members they have not seen in a decade.
DeJesus didn't speak much when she arrived home, but immediately bonded with her family members, her relatives told ABC News. Upon seeing her father for the first time in the hospital, DeJesus asked her father, "Dad, did you stop smoking yet?"
Family members also told ABC News that DeJesus had forgotten how to speak Spanish.
Hours earlier, Berry arrived at her sister Beth Serrano's home with Jocelyn. Serrano asked for privacy for her sister as she readjusts to life outside of captivity.
Meanwhile, FBI Evidence Response Team and a K-9 Unit Wednesday entered a vacant house two doors from the suspect's house dressed in hazmat suits. There has been no comment on why the home was searched and whether anything of significance was found.
ABC News' Alyssa Newcomb and Anthony Castellano contributed to this report.