US military raid in Syria eliminates ISIS leader-in-waiting, key financier: officials

On the background of a U.S. official to Fox News, the raid was described as a "successful operation" targeting a senior ISIS member assessed to be a strong candidate to assume the role of ISIS Syria Emir, a position that would have posed a direct threat to U.S. and Coalition forces as well as the new Syrian government.

No civilians were injured or killed, and there were no injuries to U.S. or Coalition forces.

"We will continue to pursue ISIS terrorists with unwavering determination throughout the region," the official added, stressing that the U.S. and its partners remain committed to ensuring the lasting defeat of ISIS and the protection of the homeland.

The State Department did not immediately respond to Fox News' request for comment.

This is a developing story. Please check back for updates.