A source with access to North Korea’s leadership told Reuters on Thursday that the reason the country’s leader, Kim Jong Un, has not been seen in public since early September is because he hurt his leg. The source says that Kim was inspecting military exercises when he hurt himself. “He ordered all the generals to take part in drills and he took part too. They were crawling and running and rolling around, and he pulled a tendon.” He needs 100 days to recover, according to the source. The source added that the injury took place “around late August or early September while drilling because he is overweight.” Kim apparently attempted limping but then the injury worsened. Kim’s absence and rumored illness has recently fueled speculation that he'd been overthrown in a coup. On Friday, he is due to attend the anniversary of the founding North Korea's Workers' Party.