Tokyo Gov. Yuriko Koike made her first public appearance Sunday after a hospitalization last month that has triggered speculation over her health and rumors of a possible resignation.

The 69-year-old visited the Tokyo Metropolitan Government building to attend an online meeting organized by the National Governors’ Association on Sunday, marking an official resumption of her duties.

“I’m fully back in shape now. I’ll restart my duties today,” Koike briskly told reporters as she entered the building.