Brother of Mohamed Sultan, a detained American-Egyptian activist on hunger strike for more than 70 days, said his brother's health is deteriorating and that he fears for his life.
In an interview with Al-Jazeera, Omar said his brother and other detainees are routinely mistreated and tortured by the prison officers.
He voiced his fear that his brother "is about to die" due to his deteriorating health conditions because of the hunger strike.
In a letter leaked from prison, Mohamed's brother Salah Sultan, also detained, said: "Save my son before he dies. My son Mohamed regularly passes out. He insists to continue his hunger strike, now lasting for more than 75 days. He lost 45 kg (99 pounds)." He called for the release of his son who is imprisoned "on trumped-up charges".