Palestinians on Sunday called for an international investigation of Israel's treatment of detained Palestinians, after a 30-year-old Palestinian died in custody and a hunger strike by four other inmates sparked a week of West Bank protests.
The death of Arafat Jaradat on Saturday raised new questions about Israel's Shin Bet security service, which has been accused by rights groups of mistreating Palestinians during interrogation.
Palestinian officials and the detainee's family alleged Jaradat was mistreated by the Shin Bet, saying he was healthy at the time of his arrest last week.
Israeli officials said Jaradat died of an apparent heart attack and denied he was beaten or subjected to any treatment that could have led to his death.
Several thousand Palestinian prisoners held by Israel observed a one-day fast Sunday to protest Jaradat's death, which was bound to spur more Palestinian demonstrations in support of prisoners.