Pyeongchang Olympic organisers are investigating a possible attack on their internet and Wi- Fi systems that took place about 45 minutes before the opening ceremony.
"It didn't affect the opening ceremony," Park said. "It went as planned. We just had some issue with our internal systems, but we are working to normalise that."
She said the systems were almost back to normal about 15 hours after the problems were discovered.
Park declined to call it a cyberattack and said she didn't want to speak in detail since organisers were still trying to identify the cause.
"We don't want to speculate right now," she said. "It's not good to guess."
She said the outage affected only "non-core" systems and had no impact on "the actual events" during today's first full day of competition.
Organisers suggested technical problems might have been caused by the mountainous region in which the Olympics are based.