A military official says charges have been dropped against one of four U.S. soldiers accused of mistreating others in their platoon.

The charges came following an investigation into the suicide of an Ohio serviceman in Iraq.

A military spokesman said Friday that Spc. Daniel Weber of Frankenmuth, Mich., has submitted his resignation from the Army and that he'll probably testify against two of his unit supervisors.

Weber and the others were charged in August after investigators began looking into the death of Pvt. Keiffer Wilhelm, who grew up in Willard, Ohio.

The military says there is no direct evidence that the soldiers' alleged misconduct caused Wilhelm's death. But Wilhelm's family believes he committed suicide because he was treated so badly.