Yokohama Mayor Atsumi Harasawa, 59, fell ill during her first question session at the city assembly on the 5th, and the chamber was suspended on the speaker's decision.
Harasawa, who won her first term in the mayoral election held on the 18th of last month, attended the assembly and answered a general question for the first time. She swayed as she walked back to her seat after the first questioner finished, and the session was halted.
The city's secretariat division said she went to a hospital. "It was a temporary health problem," the division said. "The doctor apparently told her it was fatigue and dehydration."
The city had scheduled a regular press conference for 4 p.m. on the 6th. It has been canceled so she can recover.
The session was Harasawa's first since taking office, and the interruption came during the opening round of general questions — the main forum in which assembly members press a new mayor on policy.