Egyptian security forces have reportedly detained a man suspected of trying to detonate a bomb near the US embassy in the capital, Cairo.
A security source said the man was carrying a bag that exploded outside the compound in the Garden City area.
The embassy said police had "finished their investigations at the scene" and that it had resumed normal business.
Egyptian academic Adel al-Adawy earlier tweeted photos appearing to show a small fire and a man being led away.
He wrote that the embassy was "on lockdown after a person reportedly attempted to detonate himself outside the premises".