Washington, DC - A hacker who broke into the Twitter account of the Associated Press posted a false news report about explosions at the White House injuring President Barack Obama.

The AP within a few minutes announced that its Twitter feed had been hacked, and the US wire service immediately suspended the account.

"Our accounts have been hacked," AP spokeswoman Erin Madigan-White told dpa at the AP headquarters in New York. "It was a bogus tweet."

White House spokesman Jay Carney said "the President is fine."

The hoax report read: "Breaking: Two explosions in the White House and the president is injured."