Nearly a year after a collapsed roof at the Akrotiri archaeological site in Santorini killed a tourist, the site remains shut to the public as officials have yet to complete a study to rebuild the shelter, sources told Kathimerini. In September last year, one male tourist was killed and six people were injured after parts of the 1,000-square-meter shelter fell when workers were watering soil on the roof. Archaeologists blame the contractors for large delays in preparing the study that will cover one of the most important archaeological sites in the country. The contractors, a joint venture consisting of construction firms J&P Avax, Impregilo and Empedos, said that delays have arisen due to the complexity of the project. Meanwhile, the prosecutor has also delayed in preparing his report on who is to blame for the accident. Academic experts appointed to aid the investigation have been unable to complete their work due to a student sit-in protest at the University of Patras, which has effectively shut down the institution.