CAIRO, EGYPT—Hussein Bassir, director of the Giza Plateau, responded to world-wide concern about videos that show pieces of the Menkaure Pyramid for sale. “The blocks shown in the video are authentic, but have fallen from the pyramid complex across the span of time and have not been broken off by thieves,” Bassir told Ahram Online. “The criminals seen in the video were arrested and detained for four days on charges of vandalism, trading in antiquities, and fraud,” he added. Salah Al-Hadi, coordinator of the Archaeologists’ Syndicate, says that security should be tightened at all of the country’s archaeological sites, especially at the Giza Plateau and the Saqqara Necropolis. For more, go to "How to Build a Pyramid."