At least 36 prisoners were killed when they attempted to escape from a prison transport vehicle that was ferrying them from a pre-detention facility to the large Abu Zaabal penitentiary, Egypt's state-run television station reported. The prisoners were among a group of more than 600 supporters of ousted President Mohammed Morsi who had been arrested during continuing clashes over the past four days, said Gen. Hani Abdullatif, an interior minister spokesman. Mr. Abdullatif said the prisoners died from asphyxiation after officers fired tear gas through the windows of the crowded prison transfer van that the detainees had hijacked. The attempted...