South Korea opposition chief stabbed by assailant; motive unknown

South Korea's opposition Democratic Party leader Lee Jae-myung was stabbed in the neck during a visit to the southern city of Busan on Tuesday and was airlifted to Seoul after receiving emergency treatment, party and emergency officials said, Reuters reported. 

Lee, who narrowly lost the 2022 presidential election, was conscious and was flown to Seoul National University Hospital in the capital, after a man attacked him as he was moving among a crowd of supporters and journalists at a public event.

An official at the Pusan National University Hospital, where Lee first received emergency care, said the transfer to Seoul was possible after medical staff determined his condition was not life-threatening based on initial treatment and a CT scan.

Party spokesman Kwon Chil-seung, speaking outside the hospital soon after Lee was airlifted by helicopter, said medical staff suspected damage to a jugular vein that carries blood from the head to the heart.

"There is concern that there could be large haemorrhage or additional haemorrhage, according to medical staff," Kwon said.

The attack by the assailant, seen in video footage and photographs, unfolded quickly while Lee was touring the site of a proposed airport in Busan.

The man approached wearing a paper crown with Lee's name on it and asked for an autograph as Lee spoke among a throng of supporters and reporters, then lunged forward and attacked him, video footage showed.