KABUL, April 30 (Xinhua) -- One soldier serving the NATO-led International Security Assistance Force (ISAF) was killed and four soldiers were wounded Wednesday in an explosion during a patrol in eastern Afghan province of Logar, the ISAF said.

    The wounded soldiers were taken to a medical facility for treatment, it said in a statement.

    The ISAF did not give more details and did not release the casualty's nationality as well.

    A total of 47,000 troops contributed by 40 nations are deployed in Afghanistan to help with stabilization and reconstruction efforts under the flag of NATO-led ISAF with a U.N. mandate.