WASHINGTON, March 14 (Xinhua) -- Thirteen U.S. service members have been killed after two weeks of conflict with Iran, the Wall Street Journal reported Friday, citing a U.S. official.

Ten others have been seriously wounded and about 200 injured, the report said, adding that roughly 170 of the injured have returned to duty.

Among the fatalities, six were killed in a strike on Kuwait. Another service member, who was wounded in an attack at Prince Sultan Air Base in Saudi Arabia on March 1, died from his injuries seven days later, the Pentagon said.

Another six crew members aboard a U.S. KC-135 refueling aircraft that went down in western Iraq on Thursday were confirmed dead, the U.S. Central Command said Friday.

The aircraft was lost while flying over friendly airspace on Thursday during Operation Epic Fury, the command said on X.

Iran's United Nations (UN) ambassador Amir Saeid Iravani said Wednesday that more than 1,348 civilians have been killed and over 17,000 injured since the start of the attacks carried out by Israel and the United States against his country. ■