 On January 24, the U.S. admitted to have made a second airstrike, but did not confirm the exact date or location of the strike.Also on that day, Nigeria pledged a battalion (a force between 770 and 1,100 troops) to join the Somali peacekeeping mission.On January 25, 2007 an Ethiopian soldier was killed and another seriously injured in Karamiyo, one of the last towns to fall to the Ethiopians.