British Olympic stars have joined forces to tell their teammates not to panic following three bomb blasts in the city which is hosting the games.
Rowing hero Matthew Pinsent and sprint hurdler Colin Jackson spoke out after three explosions outside a police station in the Greek capital, Athens.
Matthew said: "It's not my job to worry about it and you shouldn't let it affect the way you prepare."
Colin added: "I'm sure everything will be fine." The games start on 13 August.