(CNN) -- More than 100 Africans protested outside a police station in southern China on Wednesday afternoon following the reported death of an African merchant during an alleged police raid, China's state-run media reported.
The incident occurred in China's Guangdong Province after police began checking the passports of Africans who were operating stalls at a shopping mall, protesters told the Xinhua news agency.
A police officer told Xinhua that no one had been killed.
A brawl ensued after at least one African merchant was killed, protesters told the news agency.
Authorities told Xinhua that they were conducting routine checks at the mall and a man was injured while running from police. Later, police found that another man had been critically injured after falling from the building.
The injured were taken to a hospital, police told Xinhua.
After the incident, a large crowd of Africans gathered at a nearby police station and protested for about five hours.
At least one protester told Xinhua that he was Nigerian.
A leader in the Nigerian community in Guangdong told CNN that the man who fell off the building landed on his head and was undergoing surgery.
The leader said the Nigerian community would meet with Chinese authorities to discuss preventing similar incidents.
The protest comes as China has invested more and more money in African countries and more Africans have immigrated to China.
The demonstration also follows recent violent ethnic strife in China's far west. Last week, at least 184 people were killed and more than 1,600 injured in demonstrations by ethnic Uyghurs in Urumqi, Xinjiang, according to the Chinese government.
Uyghurs -- a minority Muslim group distinct from China's majority Han population -- say they have consistently faced discrimination and religious suppression.