Beberapa pejabat kedutaan besar AS menunggu selama 15 menit setelah ledakan sebelum mengizinkan polisi Yunani masuk ke halaman, dan lebih dari satu jam sebelum mengizinkan mereka memasuki bangunan, kata satu sumber polisi.
US embassy officials waited at least 15 minutes after the blast before allowing Greek police access to the courtyard, and over an hour before letting them into the building proper, a police source said.