Chinese has put feared ex-security chief, Zhou Yongkang, under formal arrest to investigate his suspected crimes, including accepting bribes, adultery and leaking the country's secrets, the official Xinhua News Agency said. Al Jazeera's Adrian Brown reports from Beijing. Subscribe to our channel http://bit.ly/AJSubscribe Follow us on Twitter https://twitter.com/AJEnglish Find us on Facebook https://www.facebook.com/aljazeera Check our website: http://www.aljazeera.com/