According to Tulsa's KRMG and The Associated Press, the U.S. Secret Service said Michael Tate Reed Jr., 29, was detained Friday at a federal building in Oklahoma City, where he admitted to damaging the monument. Reed claimed that Satan told him to urinate on and destroy the monument, officials said. Reed also reportedly made threats against President Barack Obama.

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Reed is now undergoing mental evaluation, the Oklahoma Highway Patrol said.

The monument has been the source of controversy. The American Atheists filed a federal lawsuit in January against members of the Oklahoma State Capitol Preservation Commission. A Satanic group is also planning a monument.

Oklahoma Gov. Mary Fallin condemned the destruction of the monument and volunteered to help raise funds to restore it, reported KOKI-TV in Tulsa.

"Our monument will be rebuilt and restored. The people of Oklahoma will not stand for acts of violence against the Capitol or its monuments,” Fallin said.

The Associated Press contributed to this report.