Accotding to opposition website Chamran news, Yaser Yousefzadeh was arrested after security forces raided his father’s home on Monday evening. After refusing to show any identification or arrest warrant, the agents attacked Yousefzadeh’s father and sister with pepper spray. They also violently beat the young activist as he rushed to the aid of his father.
Yousefzadeh was then transferred to his own residence where agents inspected the place and confiscated his personal belongings.
During the disputed 2009 presidential election Yousefzadeh campaigned for opposition candidate Mir Hossein Mousavi.
He also spent two months in solitary confinement after being arrested in early 2011.