After days of such demonstrations, which have included violent clashes between Palestinians and Israeli soldiers and settlers, Prime Minister Benjamin Netanyahu’s special envoy, Isaac Molho, sent a message to the Palestinian leadership on Sunday that Israeli officials described as an “unequivocal demand to restore quiet.” Israel also transferred to the Palestinian Authority $100 million in tax revenue it had been withholding.

But a senior Israeli official said the government would not accede to Palestinian requests to release four prisoners who have been on a long-term hunger strike or 123 people who have been detained since before the signing of the Oslo Accords in 1993. “Some of these people are accused of very heinous crimes,” the official said, speaking on the condition of anonymity because he was not authorized to discuss the matter with the news media. “They’re saying that every Palestinian hunger striker should have a get-out-of-jail-free card. You can’t have a system like that. It’s not sustainable.”

After weeks of intensifying protests in solidarity with the hunger strikers, attention turned Sunday to Mr. Jaradat, who relatives said worked at a gas station, was the father of a 4-year-old girl and a 2-year-old boy, and came from a family in which all the men had spent time in Israeli jails. He was arrested last Monday over throwing stones at Israeli cars near a West Bank settlement during November’s conflict between Israel and the Gaza Strip.

Palestinian officials said that Mr. Jaradat admitted the stone-throwing but denied heaving fire bombs. He also confessed to tossing rocks in a 2006 protest, they said. His detention was extended 12 days at a hearing on Thursday, during which his lawyer said that Mr. Jaradat complained of severe pain in his back and neck that he attributed to his interrogation.