That letter was later dismissed as a hoax by Anonymous, which has been involved in several high-profile attacks recently, including one .

The WBC didn't immediately return a request for comment. However, an open letter posted by the church earlier this week challenged Anonymous to "Bring It."

"Anonymous is warring with God; very stupid for little boys claiming to be so smart," the letter noted.

This morning, all of the church's sites were unavailable. It is not immediately clear how long the sites have been down and what role, if any, The Jester or Anonymous may have played. There has been no response yet to a Computerworld request for comment from Anonymous members.

The Jester, previously claimed responsibility for launching distributed denial of service last year in response to what it claimed was WikiLeaks' role in endangering the lives of U.S. troops.