Prisoners of Palestine Research Center : 45 “veteran” prisoners have served over 20 years in prison
Donia Al-Watan (independent Palestinian news agency) - Nov. 13, 2017

 
Headline: “An increase in the number of veteran prisoners to 45 prisoners”
      “The Prisoners of Palestine Research Center said that the number of veteran prisoners in the occupation’s prisons has risen to 45 prisoners…
The center’s communications spokesman, researcher Riyad Al-Ashqar, said… that the veteran prisoners are the ones who have served over 20 consecutive years behind bars, and among them are 22 prisoners who have served over a quarter century (25 years) [parentheses in source], and 10 who have served over 30 years.”