Twenty-nine civilians were confirmed dead and more than 130 others injured Saturday in a railway station attack in southwest Chinese city of Kunming, authorities said.

Police have shot dead at least four attackers whose identities are yet to be confirmed and are hunting for the rest.

It was an organized, premeditated violent terrorist attack, according to the authorities.

Chinese president Xi Jinping has urged the law enforcement to investigate and solve the case of Kunming terrorist attack with all-out efforts and punish the terrorists in accordance with the law.

More than 10 terrorist suspects attacked people at the square and ticket hall of Kunming Railway Station at 9:20 p.m. Saturday, killing at least 28 civilians and injuring 113 others.

Xi stressed the careful rescue and treatment of the injured civilians and proper handling of the dead.

He called for full awareness of the grave and complicated situation of anti-terrorism and effective measures to crack down violent terrorist activities in all forms.

Xi has assigned officials, including Meng Jianzhu, head of the Commission for Political and Legal Affairs of the Communist Party of China (CPC) Central Committee, and member of the Political Bureau of the CPC Central Committee, and Guo Shengkun, Chinese state councilor and minister of public security, to go to Yunnan to guide work and visit injured civilians and relatives of the victims.

Premier Li Keqiang asked relevant departments to catch and punish the terrorists, and public security departments at all levels to strengthen prevention and control measures to guarantee the safety of public places.

A Xinhua reporter on the spot said that injured people have been rushed to more than 10 local hospitals for treatment.

A doctor with the Kunming No.1 People's Hospital told Xinhua over the phone that medical workers of the hospital are busy treating the injured.