An earthquake measuring 2.8 on the Richter scale hit Shenzhen City in south China's Guangdong Province and neighboring Hong Kong last Friday afternoon.
The quake jolted an area covering parts of Nanshan and Bao'an districts of Shenzhen and Hong Kong at 2:42 p.m. (Beijing time), according to the Seismological Station of Guangdong.
The epicenter was monitored at 22.5 degrees north latitude and 113.9 degrees east longitude, with a depth of about 23 kilometers, said the station.
More than 100 people were seen gathering at a square in Futian District in downtown Shenzhen minutes after the quake. Some appeared uneasy.
"The ground shook for a couple of seconds," said Liu Wei, a local media worker.
There has been no reports of casualties in the tremor.