OLYMPIA, Wash. -- A controversial anti-religion sign on display at the Washington Capitol Rotunda was stolen Friday morning between 7 and 7:30 a.m.

A short while later it turned up at Seattle radio station KMPS as a gift for morning show host Ichabod Caine, according to King5.com reports.

The person who left the sign didn't leave a name.

The atheist display, which went on display Monday along with a Christian Nativity scene and holiday tree, has sparked outrage and received nationwide attention.

A spokesman at the Capitol said they’ve been getting calls from across the country at a rate of about 200 an hour.

Sponsors of the "Solstice Sign," as they refer to it, said Friday they did not remove it and questioned why security wasn't better in a state legislative building.

A co-president of the atheist group Freedom From Religion Foundation said that another, similar sign "stolen" in Wisconsin was actually removed as part of an "inside job."

Among other things, the long message on the display said “There is no God” and was located close to a nativity display, irking Jim and Tami Vogeler of Sammamish, Wash.

“To think that our governor would approve something like this, especially an atheist sign next to the Nativity scene…” Tami said, her voice trailing off in frustration.

"It's not a religious display; it is an attack on religion,” Freedom From Religion co-president Dan Barker said.

State officials said Barker went through the proper legal submission process, just like the group that sponsored the Nativity scene and holiday tree.

“We're not in a position where we're endorsing any point of view. We have to be careful not to do that,” said Jim Erskine, with the Washington State General Administration Office.

News of the controversial display was quickly circulating across the U.S.

Conservative TV personality O'Reilly called the display "political correctness gone mad" and urged viewers to call Gov. Chris Gregoire's office to complain.

“Washington state is ground zero for just about every nutty secular cause on Earth,” O’Reilly said. “She is a weak and confused leader who allows a fanatical group parody in Christmas displays. I mean, how crazy is this?”

Gregoire and the state’s attorney general responded to criticism by citing the First Amendment and releasing this joint statement:

“Once government admits one religious display or viewpoint onto public property, it may not discriminate against the content of other displays, including the viewpoints of non-believers."

But that explanation was not enough for the Vogelers, who said they believe this “political correctness” has gone too far.

"It's going to have some lasting and big repercussions across this country and people are going to say, ‘this is enough,’” Jim Vogeler said.

Meanwhile, the sign continued to draw protestors to Olympia Friday.

Pastor Ken Hutcherson of the Antioch Bible Church in Redmond, Wash., called an 11 a.m. news conference. The Olympian reports he'll place his own pro-Christian sign in the Rotunda to mock atheists.

Another protest was planned for 2 p.m. Sunday on the Capitol campus.

King5.com Staff contributed to this report.