Flowers left at the site of the attack, which killed at least 35 people, were quickly removed. Censors deleted videos, articles and comments about it.

At least 35 people have been killed in a car attack in southern China, believed to be the deadliest known act of public violence in the country in decades. Police say a man crashed his car into a stadium in Zhuhai on Monday where he ran down groups of people exercising on the sports track.

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.

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.