US journalist Joshua Cooper Ramo has issued an apology over his controversial reference to Japan as Korea's development model during the opening ceremony of the PyeongChang Winter Olympics.
Appearing on US television network NBC, he said on Friday that every Korean would say Japan played a key role in South Korea's recent achievements as a nation, despite its colonial rule from 1910-45.
The remarks, made during the march by Japanese athletes at the opening ceremony, drew angry reactions from Koreans.
"I sincerely apologize to anyone offended by my comments during the opening ceremony of the PyeongChang Olympics last Friday," Ramo tweeted.
"Korea has forged a unique, powerful and important path of development based on Korean values and experiences," he said.
"It is also a country to which I feel a deep personal connection, where I have many warm friendships and fond memories from years of travel, so this makes me particularly regret any distraction."
NBC Sports earlier apologised for the comments.
The PyeongChang Olympic committee said it logged a complaint immediately after becoming aware of the remarks.