Dec 19 (Reuters) - The U.S. military launched airstrikes against dozens of Islamic State targets in Syria on Friday in retaliation for an attack on U.S. personnel, U.S. officials said on Friday.

President Donald Trump had vowed to retaliate after an attack on U.S. personnel last weekend in Syria by a suspected Islamic State member.

U.S. Defense Secretary Pete Hegseth confirmed the strikes targeted "ISIS fighters, infrastructure, and weapons sites" and said the operation was "OPERATION HAWKEYE STRIKE."

"This is not the beginning of a war — it is a declaration of vengeance," Hegseth said. "Today, we hunted and we killed our enemies. Lots of them. And we will continue," he added.

Two U.S. officials, speaking on condition of anonymity, said the strikes were against dozens of Islamic State targets across central Syria.

Two U.S. Army soldiers and a civilian interpreter were killed on Saturday in the central Syrian town of Palmyra by an attacker who targeted a convoy of American and Syrian forces before being shot dead, according to the U.S. military. Three other U.S. soldiers were also wounded in the attack.

A U.S.-led coalition has carried out airstrikes and ground operations in Syria targeting Islamic State suspects in recent months, often with the involvement of Syria's security forces.

About 1,000 U.S. troops remain in Syria.

The Syrian Interior Ministry has described the attacker as a member of the Syrian security forces suspected of sympathizing with Islamic State.

Syria's government is now led by former rebels who toppled leader Bashar al-Assad last year after a 13-year civil war, and includes members of Syria's former Al Qaeda branch who broke with the group and clashed with Islamic State.

Syria has been cooperating with a U.S.-led coalition against Islamic State, reaching an agreement last month when President Ahmed al-Sharaa visited the White House.

(Reporting by Idrees Ali and Phil Stewart; Additional reporting by Costas Pitas; Editing by Caitlin Webber, Diane Craft and Edmund Klamann)