There are no signs North Korean leader Kim Jong Un received heart surgery when he disappeared from state media for three weeks, but he reduced public activity due to coronavirus concerns, South Korean lawmakers briefed by the spy agency said on Wednesday. Kim attended the completion of a fertiliser plant, North Korea’s official media said on Saturday, the first report of his appearing in public since April 11.

His absence fuelled a flurry of speculation about his health and whereabouts, with a South Korean news outlet reporting Kim was recovering from a cardiovascular procedure while CNN said U.S. officials were monitoring intelligence he was “in grave danger” after surgery.