ANKARA: Turkish fighter jets pounded ISIS targets in Syria early Friday, the prime minister's office said, after Turkey said it would take any "necessary measures" to protect itself from Islamist and Kurdish militant attacks.

Police, backed by helicopters and special forces, also launched overnight raids on more than 100 suspected ISIS and Kurdish militant locations in Istanbul, according to media reports. Some 5,000 officers were deployed in the operation.

Three F-16 fighter jets took off from a base in Diyarbakir, southeast Turkey, in the early morning and hit two ISIS headquarters and one "assembly point" before returing, the Prime Minister's office said in a statement.

"Turkish fighter jets didn't cross the Syrian border during the operation," said one official, adding that the attacks had taken place in an area of Syria, across the border from the Turkish town of Kilis.

A cross-border firefight Thursday in the same area between the Turkish army and ISIS left one militant and one soldier dead.

Broadcasters CNN Turk and NTV reported that anti-terror police raided more than 100 locations across Istanbul.

A press officer for the Istanbul police declined to comment.

The Prime Minister's Office said Thursday that Turkey will take any necessary measures to protect public order and national security following attacks by ISIS and Kurdish militants.

It has been hit by a wave of violence in the largely Kurdish southeast after a suspected ISIS suicide bombing killed 32 people, many of them Kurds, in a town on the Syrian border.