Six foreign forces, including four Americans, have received injuries in two roadside bombings in Egypt's Sinai Peninsula.
The casualties, which were caused on Thursday, were part of the Multinational Force and Observers (MFO) deployed in Egypt to support a 1979 treaty between Egypt and Israel.
US Defense Department spokesman Captain Jeff Davis identified the incidents as improvised explosive device blasts.
"The MFO evacuated the soldiers by air to a medical facility where all are receiving treatment for non-life-threatening injuries," he said.
Gunmen have intensified terrorist attacks across Egypt, particularly in Sinai Peninsula, over the past year.
Militants from the Velayat Sinai terror group, previously known as Ansar Bait al-Maqdis, have claimed responsibility for most of the attacks. Last November, the group pledged allegiance to the Daesh terrorist group, which is wreaking havoc in Iraq and Syria.
“The safety and security of US forces remains our top priority, and we are committed to taking necessary steps for their protection,” Davis said. “The United States continues to support the role of the Multinational Force and Observers in supporting" the treaty, he added.
Twelve countries contribute troops to the MFO, which reinforces the US-sponsored "peace treaty" between Cairo and Tel Aviv, including Australia, Britain and Canada, as well as the United States, which has 650 troops enlisted with the force.