SYRACUSE, N.Y. — Federal prosecutors say a U.S. Army officer at Fort Drum who served in Iraq has been charged with possessing child pornography.

Prosecutors say Lt. Col. Christopher Butler used the screen name “daddyformommies” and sent images of child pornography over the Internet to an undercover federal agent in October 2008. The complaint unsealed Friday also claims Butler offered to share four child pornography videos and kept more than 200 images depicting child pornography on his computer.

The 43-year-old officer was arrested Friday and made his initial appearance in federal court in Syracuse. He has not yet entered a plea. His lawyer did not immediately return a call.

Fort Drum officials say Butler had been deployed to Iraq twice, most recently from May 2008 through May 2009.