Kenyan athletics chief sent home over claims of bribes for dope test warnings

• Undercover reporters claim Michael Rotich was filmed offering tip-offs • Wada says 'troubling allegations' must be investigated 'without delay' The World Anti-Doping Agency has urged the Kenyan authorities to investigate "without delay" the "troubling allegations" about its Olympic athletics team manager, Michael Rotich. Related: Russia to be banned outright from Paralympics, IPC confirms