Officials say an American service member and two U.S. contractors were killed in an extremist attack Sunday in Kenya.
The U.S. military says Al-Shabab extremists overran a military base shared with Kenyan forces on the coast of the east African country.
The attackers destroyed several U.S. aircraft and vehicles at the base used by U.S. counter-terror forces.
The U.S. statement said two Americans from the Department of Defense were also wounded in the assault.
According to the Pentagon's Africa command the wounded Americans were in stable condition and evacuated for further treatment.
Officials didn't give the names of the deceased due to pending notification of relatives.
Kenya's military said five attackers were killed in the pre-dawn attack.
The Somalia-based Al-Shabab said the attack had nothing to do with the Middle East crisis.
This is the first known Al-Shabab attack against U.S. forces inside Kenya.