SEOUL, South Korea (AP) — South Korean police on Wednesday raided the residence and office of a man who stabbed the country’s opposition leader, Lee Jae-myung, in the neck in an attack that left him hospitalized in an intensive care unit, officials said.

The assault occurred when Lee was passing through a throng of journalists after visiting the proposed site of a new airport in the southeastern city of Busan on Tuesday. The attacker, posing as a supporter, approached Lee asking for his autograph before he took out a 18-centimeter (7-inch) knife to attack him.