Those criminals are ring leaders of criminal gangs in Angola, committing crimes targeted at Chinsee business people there. They hire local Africans as foot soldiers to assault Chinese nationals and their factories and shops for extortion. There are 240,000 Chinese people working and living in Angola according to the offical record.

Google translate

BEIJING, Aug. 25 - According to the Chinese Ministry of Public Security website news, Aug. 25, 10 am, a take-off from the Angolan Civil Aviation Boeing 767 charter flight touched down at the Beijing Capital International Airport. Gu Changfeng, Xue Huaibiao 37 suspected of kidnapping, robbery, extortion, abduction of a woman forced into prostitution and other criminal activities, criminal suspects, by my police escorted home.

The joint action, succeeded in destroying 12 criminal gangs in the safety of Chinese citizens kidnapping, robbery, extortion, abduction of women and forced prostitution, cracked 48 cases of all kinds of major criminal cases, and rescued 14 victims of Chinese nationality. Chinese nationals were rescued victims return home on the same plane.

On May 11, the Ministry of Public Security sent advance group went to Angola to conduct investigations against the legitimate rights and interests of Chinese citizens crime and to deploy domestic involved in the case to the public security organs synchronization carried out investigation of cases. Involving public security organs and the advance team initially identified since 2009, in the lawless persons of Chinese nationality Angola gang, frequently for the safety of Chinese citizens to commit robbery, kidnapping, extortion, abduction of women forced into prostitution and other criminal activities. Cruel means of these criminals, and some take a beating, poured petrol body, buried alive and other means extorting ransom, demanding money; Some abducting young women from the domestic to the security restriction of personal freedom, intimidation forced prostitution.

On July 19, the Ministry of Public Security sent by the Criminal Investigation Bureau Liu Ancheng any commander-in-chief, a working group composed of more than 30 police officers deployed in Fujian, Anhui, Liaoning and other places went to the Angolan capital, Luanda, and safety to establish the Joint Operations Command, and on clues to verify the arrests, handed over the repatriation of criminal suspects and rescuing abducted women of Chinese nationality, etc. to develop a detailed work program.

On August 1, the Angolan police organization of more than 400 armed police with the Working Group Joint Action, destroyed 12 criminal gangs in the safety of Chinese citizens kidnapping, robbery, extortion, abduction of women forced into prostitution, criminal suspects arrested 37, 14 to rescue the victims of Chinese nationality. Meanwhile, the Ministry of Public Security, Fujian, Anhui, Jiangsu, Guangxi, Liaoning, Sichuan and other public security organs involved 24 suspects arrested in the country.

August 25, security arrested 37 suspects were the Police escorted home. Deputy Minister of Public Security Zhang Xinfeng the airport to greet the triumphant return of the ad hoc working group.