Chinese security personnel beat and severely injured a South Korean photojournalist covering President Moon Jae-In's visit to Beijing on Thursday, media groups said.
The scuffle took place hours before Mr Moon met with Chinese President Xi Jinping in an attempt to ease tensions over the US deployment of a missile defence system in South Korea.
The incident occurred at a Beijing convention centre during the opening ceremony of a trade partnership event attended by Mr Moon, who began his four-day state visit on Wednesday.
South Korean photographers protested after security personnel stopped them from following Mr Moon's delegation.
The guards then grabbed one photographer by the neck and threw him to the floor, and seized another's camera, according to the Korea Press Photographers Association (KPPA).
More details from Korean political commentator Jung-sik Seo
