A strong earthquake jolted the Tokyo area Saturday afternoon, paralyzing train and subway services and disrupting road traffic.

At least 23 people in Tokyo and Saitama, Chiba and Kanagawa prefectures were injured in the 4:35 p.m. quake, which the Meteorological Agency said registered a magnitude of 6.0, the strongest to hit the capital in 13 years.

No tsunami warning was issued, and there were no reports of deaths or missing persons as of late Saturday evening.