steven caoSteven Cao, who leads Edelman's China group, has returned to his family after he went missing in August, reportedly to help authorities with an investigation.

Edelman, which earlier said he was cooperating with Chinese authorities on an unspecified investigation, confirmed Oct. 15 that Cao "has returned to his family" and is "spending private time" with them.

Cao joined Edelman with its acquisition of Pegasus PR Consulting in 2007. Edelman tapped Cao as CEO of the Edelman China Group in early 2013, encompassing Edelman, Edelman Digital, Pegasus and Zeno Group in the country. 

Edelman raised eyebrows in early August when it said it didn't know Cao's whereabouts, a week after Chinese authorities visited Pegasus offices. 

Pegasus co-founder Rui Chenggang, a former business news anchor in China, was detained in a government corruption investigation in July centered on the state's China Central Television.

Reuters from Beijing reported that Edelman expected Rui to divest his shares of Pegasus immediately after the Edelman acquisition, but he waited three years. The news agency said the nationalistic Rui once led a campaign to oust Edelman client Starbucks from Beijing's Forbidden City.