Two dozen American military personnel were wounded last week in a series of drone attacks at American bases in Iraq and Syria, U.S. Central Command told NBC News on Tuesday.

The Pentagon confirmed the attacks last week, but the number of U.S. casualties has not been previously disclosed.

Twenty American personnel sustained minor injuries on Oct. 18 when at least two one-way attack drones targeted al-Tanf military base in southern Syria, CENTCOM said.

A US strike in Syria has killed a senior ISIS leader who planned attacks into Europe, United States Central Command said in a statement.

The strike, carried out on Monday, was a “unilateral” US operation that killed Khalid ‘Aydd Ahmad al-Jabouri, CENTCOM said in the statement posted to Twitter.

Al-Jabouri was a senior ISIS figure who “was responsible for planning ISIS attacks into Europe and developed the leadership structure for ISIS,” CENTCOM said.

No civilians were killed or injured in the strike, according to CENTCOM.

The U.S. has launched an airstrike in Syria that killed a senior leader of the Islamic State militant group (ISIS) who had planned terror attacks in Europe, officials have revealed.

Khalid Aydd Ahmad al-Jabouri's death will "temporarily disrupt the organization's ability to plot external attacks," according to the U.S. Central Command (known as CENTCOM), which released a statement about the strike on Monday.

The exact location of Monday's attack in Syria was not revealed by CENTCOM, which said that no civilians were killed in the strike.

A US drone strike in Syria killed a senior ISIS leader in charge of planning attacks in Europe, the military announced Monday night.

Central Command (CENTCOM) confirmed the operation took out Khalid 'Aydd Ahmad al-Jabouri - which will now 'temporarily disrupt the organization's ability to plot external attacks.' 

The terrorist was responsible for planning attacks into Europe and developing the leadership structure for ISIS, the US Department of Defense command said.