The death toll from a mudslide that hit the northwestern Chinese city of Xi'an rose to 21 on Sunday, authorities said.

Six people were still missing, according to the Xi'an Emergency Management Bureau.

The mudslide destroyed two houses and cut power to 90 homes, the authority said in a statement on the WeChat social network.

Emergency authorities said that 980 people with dogs were looking for remaining missing people.

State-owned broadcaster China Central Television (CCTV) earlier reported that Friday's mudslide left a total of 18 people dead or missing.

China sees storms, flooding, landslides

China has seen particularly heavy rain and severe flooding in this summer. According to China's government, 142 people were killed by flooding and landslides in July.

China's State Flood Control and Drought Relief Headquarters and the Ministry of Emergency Management held a special meeting on Sunday to discuss flood prevention and other emergency measures. Badly-affected areas included Liaoning and Tianjin in the northwest and Shaanxi and Chongqing in the center, authorities said.

Typhoon Khanun weakened into a tropical depression on Friday night after it made landfall in Liaoning.

CCTV said that there was still flooding risk in low-lying cities. 17,859 people had been evacuated from the city of Anshan in Liaoning, it reported.

On Saturday morning, a supercell storm formed in the northwestern Xinjiang region.

sdi/jcg (Reuters, AP)