Kabul, Afghanistan (CNN) -- The U.N. in Afghanistan said security forces on Saturday thwarted an attack on its Herat compound in western Afghanistan.
A Herat provincial official said three or four armed militants clad in suicide vests were killed Saturday after they attacked the U.N. compound. At least two Afghan security officers were injured in the strike, the United Nations said.
The United Nations commended security guards for "their bravery and courage in initially responding to this attack," and also
thanked Afghan and coalition forces "for their assistance in protecting United Nations personnel and thwarting this attack."
Herat province and the city of the same name have not experienced the high level of violence that other regions of Afghanistan have endured.
The United Nations said the attack occurred just before noon and didn't disrupt its activities or harm its personnel.
"We strongly condemn this unprovoked attack," said Brig. Gen. Josef Blotz, spokesman for NATO's International Security Assistance Force. "The U.N. operates in Afghanistan to bring peace, development, and humanitarian aid. This attack demonstrates the insurgents' disregard for the well-being of Afghans."