Meanwhile, a Polish soldier died in a roadside bombing on Friday in eastern Afghanistan, the Polish Defense Ministry confirmed.

CNN: NATO begins probe into deadly Afghan airstrike

Rupert Thorneloe wrote the military memo June 5, less than a month before he was killed in a roadside bombing.

CNN: STORY HIGHLIGHTS

Bhatia, 31, a social scientist from Medway, Massachusetts, died in a roadside bombing May 7 in Afghanistan, BAE said.

CNN: American grad student dies in Iraq

In Iraq today, armed men kidnapped nearly a dozen Iraqi soldiers and four civilians were killed in a roadside bombing.

NPR: Playing the Blame Game on Iraq

The coalition did not disclose the location of the roadside bombing.

NPR: 7 American Service Members Killed In Afghanistan