The official-looking release, complete with the GE logo and slogan "imagination at work", said that GE would send its $3.2 billion tax refund from 2010 back to Washington.

The Yes Men, an activist group known for issuing hoax statements claiming major attitude changes in corporate America, said it sent the release in an e-mail to media outlets on Wednesday.

"It's a hoax and GE did not receive a refund," said Deirdre Latour, a spokeswoman for the largest U.S. conglomerate.

The spoof came amid an ongoing battle in Washington between President Barack Obama's Democratic party and the Republican-controlled House of Representatives over how to cut the nation's budget deficit.

GE shares slipped after at least two news organizations, the Associated Press and Dow Jones, reported the hoax as fact.

AP later pulled its story, which AP spokesman Paul Colford said was "clearly a case of editorial error."

Dow Jones followed up its headline, which cited the AP, with GE's rebuttal.

"We moved to clarify the original headline as soon as we became aware of the situation," said spokeswoman Ashley Huston.

GE shares were down 4 cents at $19.97 in early afternoon trading.

In October 2009, the Yes Men staged a phony press conference to "announce" that the U.S. Chamber of Commerce had reversed its opposition to climate-change legislation.

Reuters was among the news organizations to fall for that hoax, and later withdrew its story.

Fairfield, Connecticut-based GE's tax rate has been in the public eye since the New York Times reported last month that it paid no U.S. income taxes in 2010, a claim that GE denies.

GE has acknowledged that its 2010 tax bill was low due to hefty losses at its GE Capital finance unit during the financial crisis.

Chief Executive Jeff Immelt acknowledged in a March speech in Washington that the company tries to keep its tax bill as low as it can but said it does so legally.