Rail service to Tangshan, 100 miles east of Beijing, was temporarily suspended while tracks were inspected for possible damage, the official Xinhua News Agency reported.
The quake struck at 6:38 a.m. at a depth of 6 miles, the China Earthquake Networks Center said.
TSUNAMI COULD OVERWHELM FUKUSHIMA NUCLEAR PLANT IN FUTURE JAPAN EARTHQUAKE, GOVERNMENT PANEL SAYS
A quake that struck Tangshan in 1976 killed at least 242,000 people in one of the deadliest natural disasters in history.