Coalition troops in Afghanistan were searching from the air and on land for a pair of missing service members who left the nation's capital in a vehicle on Friday, officials said.
A terse statement on Saturday from NATO's mission in Afghanistan, the International Security Assistance Force, did not indicate the nationality of the pair.
"Two [ISAF] service members departed their compound in Kabul City in a vehicle on Friday afternoon and did not return," ISAF said in a statement.
"The unit dispatched vehicles and rotary-winged assets to search for them and their vehicle and the search is ongoing," ISAF said in a statement.
Media reports indicate that local radio broadcasts from ISAF commanders were being aired offering a $20,000 reward for information that would lead to the service members' return.
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The broadcasts stated that the coalition personnel are believed to have been captured by insurgents in Logar province.
An e-mail to ISAF's public affairs office for confirmation was not immediately available.