RNA - The 64-year-old, Hassan Yousef, who is also a member of the Palestinian parliament, was given the administrative detention order Monday.
Yousef’s family condemned the Israeli decision.
"We condemn this decision. He suffers from diabetes and high blood pressure," his son Owais said.
According to the Palestinian Prisoners' Club, Yousef was arrested at his home in Beitunia near the West Bank city of Ramallah on April 2.
On April 2, Hamas condemned the arrest, calling him "one of the advocates of national unity supporting the resistance project."
"Sheikh Yusef will remain a torch for joint national action and a free voice for the people of Palestine, who have not known peace and quiet under the most difficult circumstances," the statement read.
Yousef is no stranger to Israeli jails, having spent about two decades in prison, including most of the past three years. He had been released from a previous imprisonment in October 2018.
Administrative detention is a sort of imprisonment without trial or charge that allows Israel to incarcerate Palestinians for up to six months. The detention order can be renewed for indefinite periods of time. Critics of the Israeli regime and rights groups say the system is abused.
More than 7,000 Palestinians are reportedly held at Israeli jails. Hundreds of the inmates have apparently been incarcerated under the practice of administrative detention, a policy under which Palestinian inmates are kept in Israeli detention facilities without trial or charge.