Jailed Fatah leader Marwan Barghouti was placed in solitary confinement for seven days starting Wednesday for calling on Palestinians to "bolster the resistance" and cut ties with Israel.

Barghouti, the former leader of the Palestinian Tanzim militia who is serving multiple life sentences for his role in terror attacks that targeted Israelis, said in a letter released on the tenth anniversary of Yasser Arafat's death that armed resistance is "the only way to remove the occupation, achieving liberty, returning the refugees and [securing] independence."

Barghouti also Palestinian President Mahmoud Abbas to sever ties with Israel. He wrote that the role of the Palestinian Authority must be reconsidered, and that its main function should be supporting the resistance.

"Armed intifada is Yasser Arafat's legacy," he wrote.

Barghouti also expressed support in turning to the Security Council and international bodies such as the ICC, and called to do more than gamble on negotiations that have so far proven to be nothing more than a "virtual line" that has achieved nothing for the Palestinian people.

Along with placing him in isolation, the Israel Prison Service also responded by imposing a fine on him.