Jaradat, the father of three, worked at a gas station, Rabo said.

"This incident should open the door to all sorts of investigation and accountabilities," said Hanan Ashrawi, a member of the Palestine Liberation Organization's executive committee. She called for Israeli prisons to be opened to the international community.

Human Rights Watch, meanwhile, called on Israel on Saturday to "immediately charge or release Palestinians detained without charge or trial for prolonged periods."

Palestinian prisoners in Israeli detention are one of many flashpoints in the Middle East conflict. Prisoners have launched hunger strikes in the past in hopes of bringing attention to their cause and pushing Israel to ease conditions or allow some prisoners to leave.

Israeli officials have pointed out that prisoners include members of extremist groups who have "blood on their hands."

In October 2011, Israel freed more than 1,000 Palestinian prisoners -- including hundreds serving life sentences for attacks on Israelis -- in exchange for one person: Israeli soldier Gilad Shalit, who had been held by Hamas for more than five years.