The inquest into the Tunisia beach massacre has been shown CCTV and heard more details of the gun attack, including how reports of a second gunman may have been sparked by a speedboat driver who tried to confront attacker Seifeddine Rezgui.
Rezgui had thrown a grenade at an armed guard who opened fire on him as the extremist entered the Imperial Marhaba hotel from the beach with an automatic weapon, the hearing at London's Royal Courts of Justice was told.
Samantha Leek QC, counsel to the inquest, said the guard fell to the ground "seemingly unconscious" at which point the local speedboat driver, named as AI, picked his gun up and attempted to confront Rezgui but could not work the weapon as the attacker continued to claim a total of 38 lives.
Ms Leek said Rezgui was thought to have acted alone on the beach having been dropped off by an accomplice.
The inquest was shown CCTV of a white Peugeot van dropping the gunman off then driving away before Rezgui - hiding his weapon in a parasol - opened fire.
The inquest into the deaths of 30 British tourists in the Tunisia beach massacre will hear evidence critical of TUI, the travel company that owns tour operator Thomson, the inquest's counsel has said.
Some of the families of those killed in the Sousse beach attack said their loved ones were assured by Thomson it was safe to travel to Tunisia after a terror attack in the capital Tunis earlier in 2015.
The Sousse massacre came three months after 24 people were killed in an attack at the Bardo National Museum.
Samantha Leek QC, counsel to the inquest, said witnesses speaking on behalf of TUI would also be heard at the inquest.
An earlier hearing was told that many families feared the Foreign and Commonwealth Office (FCO) may have failed in its responsibilities to thousands of British tourists.
The Government, which is also represented at the inquest, has applied for certain elements of the latest hearings to be kept private, citing concerns over national security.
Tunisian police "deliberately and unjustifiably" delayed their arrival to the scene of the Sousse terrorist attack in which 30 Britons were killed, the inquest into the June 2015 massacre has heard.
Samantha Leek QC, counsel to the inquest, said a report by Tunisian Judge Akremi had identified failings by local units that could have ended the slaughter earlier.
Police arrived and shot extremist Seifeddine Rezgui Yacoubi dead after he had claimed the lives of 38 tourists on the beach outside the five-star Riu Imperial Marhaba Hotel.
The hearing packed with relatives of the victims at the Royal Courts of Justice in London heard an unnamed interior minister had told the judge some Tunisian security officers stalled on purpose.
He said the units that should have intervened in the events deliberately and unjustifiably slowed down to delay their arrival at the hotel.
They had the ability to put an end to the attack before the police arrived but wasted a considerable amount of time in getting to the hotel.
The families of 30 British tourists killed in 2015's terrorist attack on a beach in Tunisia have arrived at London's Royal Courts of Justice for the inquest into their deaths.
The inquest will attempt to determine how much the UK government and travel firms knew about the risk of an attack on tourists holidaying in the area.
Some 38 people were killed when Islamist gunman Seifeddine Rezgui opened fire in the popular resort of Port El Kantaoui, Sousse, in June 2015.
A minute's silence has been held at the reopening of the inquest into the Tunisia terror attacks.
Thirty-eight people were killed when terrorist Seifeddine Rezgui opened fire in the popular resort of Port El Kantaoui, Sousse, in June 2015.
The hearing will examine what happened to the 30 Britons who died in the atrocities.
The full inquests into the deaths of 30 Britons killed in the Tunisia beach terror attacks are to get underway today.Read the full story ›
Some 38 people were killed when Islamist gunman Seifeddine Rezgui opened fire on a beach in Sousse, Tunisia, in June 2015.Read the full story ›
Rather cloudy, but some clear spells possible. Staying mainly dry.Read the full story ›
Lawand now lives in Derby and attends the Royal School for the deaf where he has learnt to communicate in just five months.Read the full story ›
Two sisters, aged ten and eleven, who went missing from their home in Aston, Birmingham, 24 hours ago, have been found safe and well.
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