North Korean leader Kim Jong Un has not made a new appearance in state media for 30 days as of Thursday, marking the longest period of absence from public activities since 2014 and coming amid an uptick in reports of health issues this year.

Kim last appeared in state media on Oct. 12, in coverage of a missile exhibition in Pyongyang the previous day. Since then, satellite imagery has shown increased activity at his east coast beach house and a lakeside mansion near the capital, suggesting he may have spent time at these spots during his current absence.