Lee was stabbed around 10:27 a.m. local time after talking to reporters during a visit to the site of a new airport off the coast of Busan. The assailant was detained by police at the scene, the newspaper added.
Lee sustained a cut 1 centimetre-wide and remained conscious when the paramedics arrived at the scene, emergency authorities said, adding that his injuries did not appear to be life-threatening.
After receiving emergency treatment in Busan, he was airlifted to Seoul National University Hospital around 1 p.m. for surgery. Lee sustained an injury to his jugular vein, which put him at risk of additional bleeding and possible hemorrhage, according to the Democratic Party of Korea.
The assailant who appeared to be in his 60s or 70s, though his identity remained unknown as of noon, had walked through a crowd of reporters and asked Lee for an autograph. He then pulled out a 20-centimeter-long knife to stab the current opposition leader through the neck, The Korea Herald explains.
South Korea's parliament voted Saturday to impeach President Yoon Suk-yeol over his martial law declaration, after the first impeachment motion was dropped a week earlier as the ruling party lawmakers boycotted it.
South Korea's largest food company is set to establish its first Central European factory in Hungary, creating 200 new jobs in Dunavarsány, Hungarian Minister of Foreign Affairs and Trade Péter Szijjártó announced on Wednesday.