Officials in southern China ramped up security on Wednesday at the site of one of the country's deadliest mass-casualty events in years, snuffing out makeshift memorials to the 35 people killed when a man drove a car into a crowd at a sports complex.

Video showed wounded people after a car rammed into a crowd and killed at least 35 in Zhuhai, China, on Nov. 12. This video has no sound.

Reports say at least 20 were injured in the incident in Zhuhai, which is hosting a high-profile military airshow.

People laid flowers and lit candles in a southern Chinese city Zhuhai Tuesday after a driver rammed his car into a crowd, killing at least 35 people. (Source: APTN)

A 62-year-old man plowed a small SUV into a group of people exercising at a sports center in the Chinese city of Zhuhai, killing dozens.