BANGKOK (AP) — A driver killed 35 people and injured 43 others when he deliberately rammed his car into people exercising at a sports center in the southern Chinese city of Zhuhai, police said Tuesday.

Police detained a 62-year-old man at the sports center in the southern Chinese city of Zhuhai following the raid on Monday night, on the eve of the country’s first aviation exhibition by the People’s Liberation Army, which is hosted annually in the city .

One of the four hospitals receiving people for treatment said it had more than 20 wounded, state media reported Monday.

No motive was given and police said the investigation was continuing.

Police identified the man only by his surname Fan, in line with Chinese authorities’ practice. The police statement said the vehicle hit “a number” of pedestrians on Monday night.

Videos showed a firefighter performing CPR on a person as people were told to leave the scene. These were shared by news blogger and dissident Li Ying, who is better known on X as Teacher Li. His account posts daily news based on user submissions. Dozens of people were lying on the running track in the sports center in the videos. In one, a woman says “my leg is broken.”

By Tuesday morning, searches of the incident on Chinese social media were heavily censored on Chinese social media platforms. A search of the sports center’s Weibo yielded only a few posts, only a few referring to the fact that something had happened, with no pictures or details. Chinese media articles about Monday night’s incident have been removed.

Chinese internet censors take particular care to clean up social media before and during major events, such as the meeting of the National People’s Congress, where the government announces its major policy initiatives for the coming year.

Xiangzhou City District Sports Center regularly attracts hundreds of residents, where they can run on the athletic field, play football and social dance. Following the incident, the center announced that it would be closed until further notice.

China has seen a series of attacks in which suspects appear to target random people, such as schoolchildren.

In October, a 50-year-old man was detained after allegedly using a knife attack children at a school in Beijing. Five people were injured. In September, three people were killed in a knife attack in a Shanghai supermarket.

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Associated Press reporters Elsie Chen and Didi Tang contributed from Washington, and researcher Yu Bing contributed from Beijing.