ISIS claimed responsibility for a suicide car blast outside the U.S. Consulate in the Kurdish Iraqi city of Erbil on Friday.
The attack took the lives of four civilians while leaving 18 others injured, local police told CNN.
But a separate Peshmerga official also told CNN that three civilians were killed and five others were injured. Peshmerga is the name of the force that defends the oil-rich Kurdistan region of Iraq.
The deaths occurred after a small improvised explosive device went off in the area. Soon after, an unidentified car started driving towards the U.S. Consulate. A gun battle ensued, causing the car to explode just outside the building.
The area where the incident took place is reported to be packed with restaurants and cafes highly frequented by expats and U.S. government workers.
Bomb site here in #Erbil
All of the staff at the U.S. Consulate have been accounted for. State Department Spokesperson Marie Harf issued a statement expressing the U.S government's condolences to the victims' families, while reiterating Washington's unwavering support to the Iraqi people.
"The United States will continue to stand with the people of the Iraqi Kurdistan Region and all Iraqis as we work together in confronting these terrorist acts and towards our shared goal of degrading and defeating ISIL," she said, using an alternative name for ISIS.