A magnitude-6.9 earthquake jolted Hualien County in China's Taiwan region at 2:44 p.m. Sunday Beijing Time, according to the China Earthquake Networks Center (CENC), leading to one death when a worker from a cement plant in the epicenter, Yuli Town, got injured and died after arriving at hospital. 

Local fire department said on Monday that 146 people were injured in the quake.

The epicenter was monitored at 23.15 degrees north latitude and 121.30 degrees east longitude at a depth of 10 kilometers, the CENC said. It said Sunday's magnitude-6.9 quake and the magnitude-6.5 quake that occurred Saturday night were seismic activities in the same area.

The Chinese mainland is highly concerned about the strong earthquakes that jolted the Taiwan region over the weekend, Zhu Fenglian, a spokesperson for the Taiwan Affairs Office of the State Council, said on Sunday. She extended condolences to victims and their families, adding that she hopes those affected by the earthquakes can return to the normal order of life soon.

A three-story building in Yuli, which has a 7-11 convenience store on the ground floor, collapsed, trapping four people. After about three hours, all four people, including a five-year-old girl, were rescued safely, said local media.

The strong quake also caused a bridge to collapse in the area, according to local media. Three people whose vehicle fell off the bridge were rescued and sent to hospital.

In addition, more than 400 tourists are stranded on Chike Mountain in Yuli as the quake caused landslides which blocked the roads.

A train carriage was turned over by a fallen rainshed at a railway station in Hualien while two bridge fractures left three people injured. They were rescued later, according to Xinhua.

Local authorities said the earthquake broke many water pipes and caused power outages in 7,073 households in Yuli. Emergency power supply has been in operation. A small number of households in cities including Taipei has also experienced power failure due to the quake and the related repair work is underway.

Several towns in Hualien and Taitung have announced that all work and schools would be suspended on Monday.

Japan lifted a tsunami alert that was earlier issued for the Miyakojima and Yaeyama regions in the southern prefecture of Okinawa following the quake, according to broadcaster NHK.

Tremors were felt across Taiwan island, as well as in coastal areas of Fujian, Guangdong and Jiangsu provinces and Shanghai, reported CMG.

A magnitude-6.5 quake jolted the island at 9:41 p.m. Saturday, followed by more than 100 tremors. According to the CENC, a magnitude-5.7 quake hit Taitung County at 1:19 p.m., and a magnitude-5.4 one hit Hualien at 5:39 p.m. Sunday.