Ben-Gvir this week ordered a halt to Palestinian security prisoners working in bread bakeries in two Israeli jails, saying he was cancelling "benefits and indulgences".
On Thursday, a state of heightened alert with reinforced staffing levels was imposed, a spokesperson for the prison service said.
"He thinks that the prisoners issue is the easiest issue to show he is a serious leader," said Kadora Fares, head of the Palestinian Prisoners Society.
Unless the standoff is resolved, he said, Palestinian prisoners will hold a mass hunger strike from March 22, at the start of the Muslim holy month of Ramadan, traditionally a time of heightened tensions.
BOILING POINTIsrael holds about 4,700 political prisoners, around 30 of them women, according to the Palestinian Addameer organisation that supports prisoner rights.