The Israeli Ramon prison administration moved captive Abdullah Barghouti to solitary confinement human rights sources said on Wednesday.
Palestine Prisoners Society said in a statement that Ramon prison administration transferred Abdullah Barghouthi to solitary confinement providing no clear reasons.
Barghouthi was arrested in March 2003 and was subjected to severe torture and investigation rounds for more than 5 months in which he was charged of a series of attacks between 2000 and 2003 where 67 Israelis were killed.
Barghouthi was sentenced to 67 life sentences (a life sentence reaches 99 years) in addition to 5200 years.
He was isolated for many years until 2012 where prisoners went on a mass strike that accomplished a number of achievements including ending his isolation.
Barghouthi is a commander in the Qassam Brigades the armed wing of Hamas in the West Bank.
