There had been four attacks against U.S. troops in Iraq and Syria in the past 24 hours, a separate U.S. official said, speaking on the condition of anonymity.
The security sources said the patrol was accompanied by Iraqi counter-terrorism forces and that a vehicle in the patrol was damaged.
A drone was also launched at al-Harir air base in Erbil which house U.S. and international forces but was downed before reaching its target, security sources said.
It added that the base had been evacuated of U.S.-led coalition forces on Oct. 20.
The U.S. military official said they "don't have any updates regarding adjustments in force posture throughout Iraq and Syria."
Persons:
Kamal Ayash, Jamal al, Ahmed Rasheed, Timour, Idrees Ali, Timour Azhari, Mark Heinrich, Lisa Shumaker
Organizations:
U.S, Federal Iraqi, Pentagon, United, Thomson
Locations:
MOSUL, Iraq, U.S, Israel, Syria, Mosul, Ain, Asad, Baghdad, Erbil, Gaza, Iran, Tehran, Iranian, United States, Anbar, Badrani, Washington