FILE PHOTO: Turkish Interior Minister Suleyman Soylu speaks during a news conference for foreign media correspondents in Istanbul, Turkey, August 21, 2019. Ahmet Bolat/Pool via REUTERS/File Photo

ANKARA (Reuters) - Turkey will send captured Islamic State members back to their countries even if their citizenships have been revoked, Interior Minister Suleyman Soylu said on Monday, criticizing the approach of European countries on the issue.

Turkey launched an offensive into northeastern Syria against the Kurdish YPG militia last month following a decision by U.S. President Donald Trump to withdraw troops from the region. The move prompted widespread concern over the fate of Islamic State prisoners in the region.

The YPG is the main element of the Syrian Democratic Forces (SDF), which has been a leading U.S. ally in beating back Islamic State in the region, and has kept thousands of jihadists in jails across northeastern Syria. The United States and Turkey’s Western allies have said Ankara’s offensive could hinder the fight against Islamic State and aid its resurgence.

Turkey, which views the YPG as a terrorist group linked with insurgent Kurdish militants on its own soil, has rejected those concerns and vowed to combat Islamic State with its allies. It has repeatedly called on European countries to take back their citizens fighting for the jihadists.

Speaking to reporters, Soylu said Turkey would send back any captured Islamic State fighters to their countries even if their citizenships are revoked.

“We will send back those in our hands, but the world has come up with a new method now: revoking their citizenships,” Soylu said. “They are saying they should be tried where they have been caught. This is a new form of international law, I guess.”

“It is not possible to accept this. We will send back Daesh (Islamic State) members in our hands to their own countries whether they revoke their citizenships or not,” he said.

Soylu had warned at the weekend that Turkey would send back Islamic State members captured by Turkey to their home countries and complained of European inaction on the matter.

The United States said last month that it had killed Islamic State’s leader Abu Bakr al-Baghdadi in northwestern Syria, where Turkey and Russia have troops. While Baghdadi’s death was hailed by world leaders, including Turkey, the group has vowed revenge against the United States.