U.S. officials say the same extremist group that killed American journalist James Foley is holding an American woman hostage.

Debris spread around buildings damaged during battles between Syrian troops and rebels in Mleiha, some 10 kilometers (6 miles) southeast of downtown Damascus, Syria (AP Photo)

A family representative says the 26-year-old woman was doing humanitarian aid work in Syria when she was abducted by the group Islamic State.

She's not being identified out of fear for her safety.

Meanwhile, U.S. officials say an American man has been killed while fighting for extremists in Syria, mostly likely for the Islamic State.

The man is identified as Douglas McAuthur McCain.

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