At the end of May 2017, 6,020 Palestinian security detainees and prisoners were held in Israeli prisons, 329 of them from the Gaza Strip.* An additional 811 Palestinians were held in Israel Prison Service facilities for being in Israel illegally, 15 of them from the Gaza Strip. The IPS considers these Palestinians – both detainees and prisoners – criminal offenders.
A few dozen other Palestinians (we do not have precise figures) are held in IDF facilities for short periods of time. The following data were provided by the military and by the IPS.