RNA - Taqatqa was arrested at his home in Bethlehem last month and has not been convicted yet, Middle East News erported.
The prisoners and ex-prisoner affairs committee held the Israeli authorities fully responsible for his death.
Some 7,000 Palestinians are currently behind bars in 17 Israeli prisons and detention centers, according to reports.
More than 400 Palestinians are being held without trial under so-called administrative detention, which is a policy according to which Palestinian inmates are kept in Israeli detention facilities without trial or charge. Some Palestinian prisoners have been held in administrative detention for up to 11 years.