3:11 am

At least one person died and 38 others were injured. Eight of the injured are critical, said Yao Fucheng, an official with the government of the Jinggu Dai and Yi autonomous county, Xinhua reported.

3:01 am

The quake zone has experienced constant aftershocks with the strongest one measuring 4.2 magnitude. Power supply was cut in some towns, but traffic to the quake zone remains open.

The CENC initiated a Class-II emergency response to the quake, and classified the quake as a major earthquake disaster.

Diagram displays the quake epicenter of the quake at the Jinggu county, Pu'er city of Yunnan province, on Oct 7, 2014. [Photo/chinadaily.com.cn]

2:20 am

Power supply restored in the quake epicenter of Yongping town, Yunnan-based Chuncheng Evening News reported.

1:56 am

One person was killed and 30 others were injured, among whom eight were in serious condition, the pulicity department of Pu'er city, Yunnan province, told China Daily reporter.

Soldiers are transfering quake victims at the epicenter of Yongping town, Jinggu county of Yunnan province, on Oct 7, 2014. [Photo/Sina Weibo]

1:03 am

"The whole building was shaking terribly with a loud cracking sound. Plates fell off in the kitchen. We all ran out and the streets now are packed with people," Li Anqin, a resident living in Weiyuan, Jinggu's county seat, was quoted as saying by Xinhua.

00:49 am

More that 1,000 rescuers, including soldiers, were on their way to the scene, with tents, blankets and other relief materials, China Central Television reported.

Firefighters from Xishuangbanna of Yunnan province prepare to head for the quake epicenter for quake relief, on Oct 7, 2014. [Photo/Xinhua]

00:32 am

At least one person has been confirmed dead and 19 others were reported injured, Xinhua quoted local government.

The casualties was reported from the Yongping town, Jinggu county of Yunnan province, which is only five kilometers away from the epicenter. With a population of some 54,000 people, the mountainous town is one of the worst-hit area in the quake.

Tiles are pictured scattered in the courtyard of a household in the Jinggu county of Yunnan province, on Oct 7, 2014. [Photo/Xinhua]

11:57 pm

Local residents take shelters outdoors at the Jinggu county of Yunnan province, on Oct 7, 2014. [Photo/Xinhua]

KUNMING - At least one person has been confirmed dead and three others were injured after a 6.6-magnitude quake jolted a county in Southwest China Tuesday night, according to local government.

The casualties was reported from the Yongping town, Jinggu county of Yunnan province, which is only five kilometers away from the epicenter.

The quake at 9:49 pm (Beijing Time), with a focal depth of five kilometers, jolted the Jinggu Dai and Yi autonomous county with a population of 290,000, said an official with the county's publicity department.

A photo grab from google maps shows the epicenter of the quake. [Photo/chinadaily.com.cn]

The first batch of 230 professional rescuers have been rushing to the quake zone, according to the department.

"The whole building was shaking terribly with loud cracking sound. Plates fell off in the kitchen. We all ran out and the streets now are packed with people," Li Anqin, a resident living in Weiyuan town, the county seat of Jinggu, told Xinhua via telephone.

Li's apartment is on the ground floor. "I haven't seen any building around collapsed yet," she added.

Pictures posted on the internet show cracks on walls.

The China Earthquake Networks Center said the epicenter was monitored at 23.4 degrees north latitude and 100.5 degrees east longitude, which is about 67 km away from Lincang city and 85 km away from Pu'er city. Strong tremor was also felt in the provincial capital Kunming.

Earthquakes frequently strike in the region. A 6.5-magnitude quake in Ludian, Yunnan, on August 3 killed more than 600 people.

A 8.0-magnitude quake in Sichuan province, also in the southwestern China, in 2008 killed almost 70,000 people.