Al-Quds Brigades is a paramilitary organisation and the armed wing of the Palestinian Islamist organization Palestinian Islamic Jihad (PIJ), which is the second largest armed group in the Gaza Strip, after Hamas. AQB's leader is Ziyad al-Nakhalah, based in Damascus, Syria. The head of AQB in the Gaza Strip was Baha Abu al-Ata until he was killed in November 2019.