BBC Sport - Wada president: We need evidence to launch investigation

We need evidence to launch investigation - Wada president

World Anti-Doping Agency (Wada) president Sir Craig Reedie says they need evidence before launching an investigation.

It comes after world champion sprinter Justin Gatlin said he was "shocked and surprised" at doping allegations made against his coach and an agent.

READ MORE: Gatlin 'shocked' over coach allegations