Two women shot at the U.S. consulate in Istanbul on Monday and at least eight people were killed in a wave of separate attacks on Turkish security forces, weeks after Ankara launched a crackdown on Islamic State, Kurdish and far-left militants.

The NATO member has been in a heightened state of alert since starting its “synchronized war on terror” last month, including air strikes against Islamic State fighters in Syria and Kurdistan Workers Party (PKK) militants in northern Iraq. It has also rounded up hundreds of suspected militants at home.

Police armed with automatic rifles cordoned off streets around the U.S. consulate in the Sariyer district on the European side of Istanbul, following the gun attack there.

Ahmet Akcay, a local resident who witnessed the attack, told Reuters that one of the women fired four or five rounds, aiming at security officials and consulate officers.