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At least 3 US soldiers killed by Afghanistan bomb

At least three U.S. soldiers died Tuesday in southern Kandahar province when their convoy struck a powerful improvised explosive device, officials said.

The U.S.-led International Security Assistance Force said in a brief statement that three of its members had been killed when their convoy struck the IED in southern Afghanistan. It did not release their nationalities.

Earlier, however, a NATO spokesman had said four U.S. service members had been killed and others were wounded, The Associated Press reported.

Reuters also reported that four American service members had been killed, citing Kandahar provincial spokesman Jawid Ahmad Faisal.

There was no immediate explanation for the differing number of deaths.

The deaths came just a day after three Georgian solders with the ISAF were killed by an IED in Helmand province.