My comment:
(a) This report is truthful. The pertinent Caixin report gives one the impression of the spokesman telling MORE.
(b) 北京两会期间周永康再次受到媒体关注. BBC Chinese, Mar 2, 2014. www.bbc.co.uk/zhongwen/simp/chin ... gkang_brother.shtml
("虽然中国媒体到目前为止还没有点周永康的名字,但是周滨为周永康之子的事实已广为人知。周六 [Mar 2, 2014] 财新网报道说,'周滨夫妇及其数名亲人被带走”,报道还说周滨的三叔周元青、三婶周玲英和堂弟周峰,另外岳父黄渝生也于去年12月失去联系'")
Search from several angles discloses nothing in the Caixin.com to that effect, though the aforesaid report is highly cited as of now.