The Associated Press' and AP Moble Twitter accounts were hacked Tuesday.
A bogus tweet from the AP account reported explosions at the White House.
! RT @ap: Breaking: Two Explosions in the White House and Barack Obama is injured— josé martinez (@jose_martinez) April 23, 2013
The AP immediately issued an advisory that the account had been hacked. AP journalists and AP media relations team tweeted that the explosion alert was false.
The @ap Twitter account has been suspended after it was hacked. The tweet about an attack on the White House was false.— AP CorpComm (@AP_CorpComm) April 23, 2013
It's not yet clear who might have been responsible for the hack, though a tweet from the compromised AP Mobile Twitter account suggests the "Syrian Electronic Army" may have played a role.
The AP reports the attacks came after hackers made repeated attempts to steal AP journalists' passwords. The AP and AP Moble Twitter accounts have been suspended.
The false tweet briefly sent the Dow Jones Industrial Average sharply lower.
Asked about the incident at a press briefing, White House spokesman Jay Carney said the President is fine.
"I was just with him," Carney said.
The hack comes two days after CBS' "60 Minutes" and "48 Hours" programs' Twitter accounts were compromised and suspended by Twitter.