Jae-myung was walking in a crowd of journalists after visiting the site of a new airport when a man in front of him lunged and struck him in the neck, footage on South Korean television channels showed.
The 59-year-old was seen collapsing to the ground as people rushed to aid him.
One man was seen pressing a handkerchief on Jae-myung’s neck.
He was “walking to his car while talking to reporters when the attacker asked for his autograph”, a witness told local broadcaster YTN, adding that the opposition leader was then struck with what “looked like a knife.”
Emergency responders were seen carrying Jae-myung into an ambulance. He was later taken to hospital on a helicopter, according to the Yonhap news agency.
The agency said he was bleeding but conscious as he was transported to the Pusan National University Hospital.
“This is an act of terror against Lee and a serious threat to democracy that should never occur under any circumstances,” Kwon Chil-seung, an MP from Lee’s Democratic Party, told reporters outside the hospital.
“As to Lee’s condition, we are waiting for the medical staff’s assessment,” he added, demanding a “thorough” police investigation into the attack.
Police in Busan said Jae-myung suffered a “one-centimetre laceration on his neck” and that he “remains conscious and bleeding is minor”, according to South Korean news outlet Chosun Ilbo.
TV footage showed police officials wrestling the attacker to the ground. He was seen wearing a hat with Jae-myung’s name on it.
Yonhap said the assailant has been arrested.
Presidential contender
Jae-myung lost in 2022 to conservative Yoon Yeol in the tightest presidential race in South Korea’s history.
Yoon expressed “deep concern over the safety of Jae-myung upon hearing of the attack,” his spokeswoman Kim Soo-kyung said.
“Yoon emphasised our society should never tolerate this kind of act of violence under any circumstances,” she stated.
A former child factory worker who suffered an industrial accident as a teenage school drop-out, Jae-myung rose to political stardom partly by playing up his rags-to-riches tale.
He is widely expected to run for president again in 2027, and recent polls have indicated that he remains a strong contender.
But Jae-myung’s bid for the top office has been overshadowed by a string of scandals.
He avoided arrest in September when a court dismissed a request from the prosecution for him to be taken into custody pending trial on various corruption charges.
Jae-myung still faces trial on charges of bribery in connection with a firm that is suspected of illicitly transferring $8 million to North Korea.
He is also accused of breaching his duties, allegedly resulting in a loss of 20 billion won ($15 million) for a company owned by Seongnam city during his term as its mayor.
Jae-myung has denied all allegations against him.
In August last year, he launched a hunger strike against what he called the Yoon government’s “incompetent and violent” policies.
He was hospitalised because of fasting-related ailments on September 18 after not eating for 19 days.
AFP
