UPLAND, Calif. (AP) — Four Southern California men have been charged with plotting to kill Americans and destroy U.S. targets overseas by joining al-Qaida and the Taliban in Afghanistan, federal officials said Monday.

The defendants, including a man who served in the U.S. Air Force, were arrested for plotting to bomb military bases and government facilities, and for planning to engage in "violent jihad," FBI spokeswoman Laura Eimiller said in a release.

A federal complaint unsealed Monday says 34-year-old Sohiel Omar Kabir of Pomona introduced two of the other men to the radical Islamist doctrine of Anwar al-Awlaki, a deceased al-Qaida leader. Kabir served in the Air Force from 2000 to 2001.