Barghouti, along with Karim Younis, Maher Younis and Mahmoud Abu Sorour, were isolated and placed in solitary confinement at the Jalameh prison in northern Israel after being transferred from Hadarim Prison, located some 20 kilometers from Tel Aviv.
Israeli prison officials have cracked down on Palestinian prisoners after more than 1,100 political detainees launched an open-ended hunger strike on Monday.
Palestinian leaders, including Prime Minister Rami Hamdallah and Palestinian Liberation Organization (PLO) Executive Committee Member Hanan Ashrawi, have backed the strike.
Some 6,500 Palestinians are now detained by Israel for a range of offences and alleged crimes, and of those, 62 are women and 300 are minors. According to Palestinian authorities and the advocacy group Addameer, some 500 of them are held under administrative detention which means they are jailed without charge or trial for a period of six months, which can be extended.
Other demands include periodic medical examination, visits by the International Red Cross, installing pay phones and air condition systems, allowing prisoners to keep books, newspapers, clothes, and food.
Many of these people's medical requirements are neglected, and owing to this more than 50 Palestinian prisoners lost their lives since 1967, says the Palestinian Central Bureau of Statistics.
You can bet they wish they got the same treatment as the terrorists in Israeli prison.
Israeli-Palestinian peace efforts have been at a standstill since a US-led initiative collapsed three years ago.
As reported by ABC News, the Israeli government has no current plans to enter talks regarding ending the Palestinians' hunger strike.
"As part of Israel's effort to undermine the Palestinian struggle for freedom, an Israeli court sentenced me to five life sentences and 40 years in prison in a political show trial that was denounced by global observers", he wrote.
The strike coincides with Palestinian Prisoners Day, which is marked on April 17 every year.
Authorities will set up a field hospital at the Ketziot prison in southern Israel to treat hunger strikers if needed, Librati said.
Internal Security Minister Gilad Erdan said that he believes the strike has no legitimacy. "Palestinian prisoners have been demanding these basic rights for years", said Amina al-Taweel, spokesperson for the Hebron-based Palestinian Prisoners Center for Studies. The other cage bore the pictures of two Israeli soldiers killed in the 2014 war between Israel and Hamas, and the pictures of two Israeli civilians who disappeared after entering Gaza.