Amnesty International cites "shocking scenes of violence meted out by security forces" and urges "an immediate investigation."
"The shocking scenes of violence meted out by the security forces need to be urgently investigated and those responsible for human rights violations must be brought to justice," said Hassiba Hadj Sahraoui, Deputy Director of the Middle East and North Africa Programme.
"While we recognise the duty of security forces to ensure that public order is upheld, the families of those detained, the Iranian public and the international community should be told what exactly are the basis of the charges and shown how exactly those arrested were connected to violence."
"While we recognise the duty of security forces to ensure that public order is upheld, the families of those detained, the Iranian public and the international community should be told what exactly are the basis of the charges and shown how exactly those arrested were connected to violence."