Yongsan District Mayor Park Hee-young made a phone call to a number ending in '8100' the morning after the Itaewon disaster, which was confirmed to be the work phone of the presidential security chief. This call raised questions about the truthfulness of his statements during the previous day's hearing, where he insisted that conversations with the presidential security office were unrelated to his official duties. The fact that a key figure from the presidential security office was involved in these communications suggests there may be discrepancies in his testimony.

On October 29, the day after the Itaewon tragedy, Mayor Park called the '8100' number at 9:45 a.m., and received a call from the same number shortly thereafter. This number was used by the then-head of the presidential security office, Kim Jong-chul, raising concerns about the authenticity of Park's claims that he had no connection with the presidential security office regarding the tragedy. This lack of clarity regarding their interactions has implications for accountability in the handling of the incident.

It was revealed that there were multiple communications between the Yongsan District Office and the presidential security office surrounding the time of the disaster. Mayor Park, along with his secretary, had prior communications with the '8100' number, though during the recent hearing, both stated they had no recollection of the calls. The testimony provided raises significant concerns regarding the transparency of the communications between municipal authorities and presidential security, underlining the need for further investigation into the events leading up to the Itaewon disaster and the responses during and after it.