Two coalition servicemembers were killed and at least 40 other people were wounded in indirect-fire attacks Wednesday on Camp Victory in Baghdad, the U.S. military said Thursday.

No other information on the casualties has been released.

The Associated Press reported that the top commander in Iraq, Gen. David Petraeus, said 107 mm rockets were used. A number of other rockets also were found at the launching site, he said, adding the military had strong leads about who was behind the attack. Petraeus did not elaborate. But a U.S. military official said the rockets were fired from an abandoned school nearby.

Camp Victory is largely an American base, but numerous other nations have troops stationed at the base, which is the main headquarters for the multinational military effort in Iraq.

It is the second deadly indirect-fire attack on the base in recent weeks. On Sept. 11, U.S. military officials said a Shiite militant group — using a rocket allegedly manufactured in Iran — launched an attack that killed one person and wounded 11 others.

The incident Wednesday was unusual in that so many casualties were reported. Mortar or rocket attacks are a fairly frequent occurrence on even the largest U.S. bases in the country.

Two of those wounded in the attack were described as “third country nationals,” a term that generally applies to contractors working on the base who are neither Iraqi nor American.

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