A suicide bomber on a motorcycle set off a blast near the US embassy in Tunis, police said.
Five police officers were wounded in the explosion on Friday, Tunisia's interior ministry said.
The area around the site was littered with debris, video posted to social media showed.
The ministry said the explosion had killed the terrorists.
"All security units were placed on high alert to face any possible risks," the ministry said in a statement.
Euronews has reached out to the American embassy but they did not respond at the time of publication.
Here are photos from the scene: