Seifeddine Rezgui ? the student who carried out the murderous attack in the Tunisian resort of Sousse which left at least 30 Britons feared dead ? disappeared along with six other young men he shared a house with a month before the slaughter on the beach, The Independent understands. A number of the men, who had rented the property next to the Mosque of the Seven Virgins in the Islamic holy city of Kairouan, remained at large. The group led secretive lives, deliberately avoiding contact with local people, according to neighbours, who also claimed that there were visits by a group of Salafists before the building was suddenly left empty. Authorities in Tunisia are ?sure? Rezgui had help in...