Dirar Abu Sissi, 49, the Gaza power plant director who was abducted by Israeli Mossad agents in the Ukraine earlier this year, has demanded his release from solitary confinement and medical attention.

Abu Sissi has been jailed at the Eshel prison in Beer Sheva after his mysterious disappearance.

He told the lawyer of the Gaza prisoner affairs ministry during a visit that he was brutally tortured and maltreated by investigators in Petah Tikva and Ashkelon and that they also threatened to kill his wife and family.

Seeking residency in his wife's native country the Ukraine, Abu Sissi was abducted by men wearing civilian and military clothing while he was boarding a train in the capital, and they informed him that he was being arrested by the Israeli Mossad.

He said he was detained for six hours and then transferred to Israel where he was held for twenty days of questioning. Then he was taken to Ashkelon prison where he was tied and tortured and deprived of sleep.

Abu Sissi has held that the charges held against him are illegitimate.

Moreover, the Gaza resident has developed a conditions in the heart, bladder, and kidney as well as in the stomach, low blood pressure and pain in the left eye.

He remains held in isolation in Eshel prison.