PORT EL KANTAOUI, Tunisia - Thousands of scared foreign holidaymakers were being flown from Tunisia on Saturday after an Islamist gunman killed 38 people, most of them British tourists, at a beach resort.
The Islamic State jihadist group, which controls swathes of Iraq and Syria, claimed responsibility for the attack, the deadliest in Tunisia's recent history.
Dozens more people were wounded when the assailant pulled a gun from inside a beach umbrella and opened fire on crowds of tourists on the beach and by a hotel pool in the popular Mediterranean resort of Port el Kantaoui.
Tunisian Prime Minister Habib Essid announced that from next month armed tourist security officers would be deployed all along the coast and inside hotels.
But a heavy blow had already been delivered to the key tourism industry with British tour operator Thomas Cook announcing it would offer all customers the possibility to change bookings to Tunisia up to and including July 24.
The Association of British Travel Agents said it was consulting with the Foreign Office about the longer term.
The Tunisian prime minister said that most of the dead were British but that they also included Germans, Belgians and French.
The attack, the second against tourists in Tunisia this year, came on the same day that 26 people were killed at a Shiite mosque in Kuwait and a suspected Islamist attacked a factory in France.
IS claimed both the Kuwait bombing and the Tunisia attack, which came just days before the first anniversary of the group declaring its territory in Iraq and Syria a "caliphate".
IS said the gunman was a "soldier of the caliphate" who had targeted enemies of the jihadist group and "dens (of...) fornication, vice and apostasy".
Most of those killed were "subjects of states that make up the crusader alliance fighting the state of the caliphate", the group said, referring to the US-led coalition conducting an air campaign against it in Iraq and Syria.
Tunisian Secretary of State for Security Rafik Chelly told Mosaique FM the gunman was a student previously unknown to the authorities.
"He entered by the beach, dressed like someone who was going to swim, and he had a beach umbrella with his gun in it. Then when he came to the beach he used his weapon," Chelly said.
'I saw someone get shot'
Witnesses described scenes of panic after the shooting at the hotel on the outskirts of Sousse, about 140 kilometres (90 miles) south of the capital Tunis.
"All I saw was a gun and an umbrella being dropped," British tourist Ellie Makin told ITV television.
"Then he started firing to the right-hand side of us. If he had fired to the left I don't know what would have happened, but we were very lucky."