Turkish officials have claimed that government authorities have successfully captured the Islamic State’s new leader, Abu al-Hassan al-Hashimi al-Qurashi, in a raid in Istanbul.

According to the Turkish news station OdaTV, Turkish anti-terrorism police and agent detained a man suspected to be the leader of a jihadist group. Al-Qurayshi is the successor to Abu Ibrahim al-Hashimi al-Qurayshi, who perished in a United States Special Forces raid earlier this year.

Turkish authorities said that Al-Qurayshi was captured after intensive police surveillance and intel gathering, particularly around the ISIS leader’s residence in Istanbul. Officials say that the arrest was completed without firing a single bullet and had no casualties.

OdaTV reported that Turkish President Recept Tayyip Erdogan has already been informed of al-Qurayshi’s capture and is expected to give a formal announcement within the coming days.

Two senior Turkish officials who spoke under the condition of anonymity confirmed that the arrest happened. However, independent sources could not verify if the man captured was indeed the new ISIS ringleader.