"Definitely there were three," Tunisian President Beji Caid Essebsi told France's Itele television and Europe 1 radio on Sunday.
"Two were killed, but there is one who is now on the run," he said. "In any case, he will not get very far." This was the first acknowledgement that there were three attackers. Two others, who were killed by security forces, were identified as Jabeur Khachnaoui and Yassine Laabidi.
Responsibility for the massacre was claimed by the self-proclaimed Islamic State of Iraq and al-Sham (ISIS), an insurgency seeking to establish a caliphate across Iraq, Syria and other parts of the Muslim world.
The dead foreigners were four Italians, three Japanese, three French, two Spaniards, a Colombian, an Australian-Colombian, a British woman, a Belgian woman, three Poles and a Russian.