CAIRO (Middle East Eye) – Mohamed Badie, the detained leader of Egypt’s largest opposition group, the Muslim Brotherhood, has begun a hunger strike inside his cell at a new prison in protest against mistreatment and medical negligence, a rights group has said, citing a leaked letter from prison. Badie, 79, was transferred to Badr 3 prison last year from the notorious Tora Maximum Security Prison 992, known as Scorpion where he had been held in solitary confinement for nine years. He was among thousands detained in the summer of 2013, when then defence minister Abdel Fattah el-Sisi led a coup against his predecessor Mohamed Morsi, a senior member of the Brotherhood.