A suicide bomber targeted a police vehicle in the Tunisian capital Tunis on Thursday, wounding several people.
Reuters news agency, citing witnesses, reported the blast occurred on the central Charles de Gaulle street not far from the French embassy.
Two police officers and three civilians were injured, according to the interior ministry.
Body parts were strewn in the road around the police car, an AFP news agency correspondent said.
The loud explosion, for which there was no immediate claim of responsibility, was heard throughout the surrounding neighbourhood.
The incident came four years after 60 people were killed in two attacks at a museum and beach resort in the North African country.
The Islamic State of Iraq and the Levant (ISIL, or ISIS) group claimed responsibility for both attacks.
In February, a Tunisian court sentenced seven people to life in prison over the incidents.
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