Keramatollah Zareian - کرامتالله زارعیان
Keramatollah Zareian was born in 1985 and he was a political and student activist. He was arrested in August 2009 during the post-election protest. He was released but forced to move to Singapore to continue his studies. During his visit back to Iran he has been arrested at the airport and again detained. When he decided to stay in Iran to finish his studies, he complained about continuous harrassment by the security forces and threats against him. The security forces wanted to induce him to leave Tehran. On the 25th of November 2012 he has been reported missing and his body has been found in his rented appartement in Jahrom in the bathtub full of water 4 days after. This condition made the determination of the causes of his death much harder. It is highly probable that he has been killed under torture. Sources: in English, in Persian here and here.