subcutaneous quoted Captive revolution by Nahla Abdo-Zubi
Despite the loudly announced exchange of prisoners in January 2010 (with the exchange of Palestinians for the Israeli soldier, Shalit) suggestive of a large decrease in the numbers incarcerated, in fact the release of about 1,000 detainees during the exchange did not reduce the overall number of detainees; the number of Palestinian detainees in Israeli prisons was estimated at 4,700, of which there were 185 children and 320 administrative detainees. Between January 2012 and 23 March 2012, there were about 900 detentions throughout the 1967 occupied territories. These included tens of children, women, members of the Palestinian Legislative Council (PLC) and a number of those who were released, were then arrested again (Ferwana 2013).
So the current situation, where israel has released 150 Palestinian political prisoners while arresting over 200 more in the West Bank, is far from unprecedented.