Lee Jae-myung was attacked as he spoke to reporters during a visit to the southeastern port city of Busan.

Lee, who heads the main opposition Democratic Party, was stabbed on the left side of his neck during a question and answer session with journalists, South Korea’s Yonhap news agency reported.

The attacker was arrested at the scene, the agency added.

It did not provide any further details and the extent of Lee’s injuries was not clear. Pictures showed him lying on his back on the floor with his eyes closed, as officials crowded around him and one held a cloth against his neck.

Lee had earlier toured the site of a new airport under construction on Busan’s Gadeok Island.

More to come…