JERUSALEM — Israel’s prime minister vowed tougher measures to curb Palestinian violence at an emergency meeting Tuesday night after police clashed with Palestinian protesters in a third straight day of unrest at Jerusalem’s most sensitive holy site during the Jewish new year holiday of Rosh Hashanah.

Prime Minister Benjamin Netanyahu said Israel “will use all necessary measures to fight against those who throw stones, firebombs, pipe bombs and fireworks in order to attack civilians and police. On the eve of the holiday it was again proven that throwing stones can kill.” He said he will take steps so that attackers will face tougher punishment.

On Monday an Israeli died after Palestinians pelted his car with rocks. And several Israeli civilians and police were injured in various attacks by Palestinians this week.

Police entered the Al-Aqsa mosque compound early in the morning to disperse a group of protesters who had holed up inside the mosque overnight, said police spokeswoman Luba Samri.

The protesters threw rocks, fireworks, concrete blocks and a firebomb at the officers, she said, adding that two Palestinians were arrested and five police officers were slightly injured in the violence.