8 American U.S. deaths at military base in Afghanistan December 2009

Kabul, Afghanistan (CNN) -- Eight Americans were killed in a suicide bombing Wednesday at a military base in eastern Afghanistan, according to a U.S. military official and a U.S. Embassy official.

A suicide bomber wearing an explosive vest attacked Forward Operating Base Chapman near the district of Khost in Khost province, said a third official, who asked not to be named.

The military official said the eight people were not from the military.

There were conflicting reports as to whether the bomber walked into the dining facility or the gym at the base.