CHARGED WITH FRAUD- New York State Sen. Malcolm Smith, second form left, arrives to federal court in Westchester, N.Y., April 23. (AP Photo/Seth Wenig)

by Jim Fitzgerald

Associated Press Writer

WHITE PLAINS, N.Y. (AP) — Amid a growing perception that corruption is a serious problem in New York, six politicians pleaded not guilty Tuesday in a federal case that alleges an audacious plot to buy a line on New York City's mayoral ballot.

BRYEON HUNTER

CHICAGO (AP) — A suburban Chicago woman who reported that her 1-year-old son had been kidnapped is now being accused of killing the boy in a savage beating and concocting the abduction story as a cover-up.

ALIVE AND WELL--President Barack Obama, and White House Senior Advisor Dan Pfeiffer, right, react to a reporter's question as they leave the Treasury Department in Washington. (AP Photo/Charles Dharapak, File)

NEW YORK (AP) — Hackers compromised Twitter accounts of The Associated Press on Tuesday, sending out a false tweet about an attack at the White House.

The false tweet said there had been two explosions at the White House and that President Barack Obama was injured. The attack on AP's Twitter account and the AP Mobile Twitter account was preceded by phishing attempts on AP's corporate network.

The AP confirmed that its Twitter account had been suspended following a hack and said it was working to correct the issue. The fake tweet went out shortly after 1 p.m. and briefly sent the Dow Jones Industrial Average sharply lower. The Dow fell about 143 points, from 14,697 to 14,554, after the fake Twitter posting, and then quickly recovered.

A Securities and Exchange Commission spokeswoman declined comment on the incident.

AP spokesman Paul Colford said the news cooperative is working with Twitter to investigate the issue. The AP has disabled its other Twitter accounts following the attack, Colford added.

White House spokesman Jay Carney said the President is fine. "I was just with him," Carney said at a news briefing.

A representative for Twitter did not immediately return messages for comment.

BEING INVESTIGATED--In this March 2, 2011 photo, Nation of Islam Minister Louis Farrakhan, left, and his son Mustapha Farrakhan, are seen during ceremonies honoring Virginia seniors, including Mustapha's son, at an NCAA college basketball game in Charlottesville, Va.  (AP Photo/Steve Helber, File)

CHICAGO (AP) — A state law enforcement agency is investigating the son of Nation of Islam Minister Louis Farrakhan after a newspaper determined he is a part-time suburban police officer who uses an unmarked squad car to provide traffic control for his father, an official said Monday.