Lawyers and activists claim that large numbers of children, some as young as nine, have been illegally imprisoned during protests which followed the second anniversary of the 2011 uprising.
Some of those arrested have been subject to torture including beatings, electrocution with Tazer-style devices and being forced to strip naked before being drenched in cold water, according to a report in the Independent newspaper.
Some of the children were forced to drink a foul "soup" consisting of salt dissolved in water, said Mahmoud Bilal, a lawyer who works on cases involving detained minors.
One lawyer estimated up to 400 children had been detained by police during outbreaks of violence.
Mohamed el-Maligi, an activist who spent more than a week in detention earlier this month, told The Independent how he shared a cell block with 47 children who had been arrested by the police. (The Telegraph)