NEW YORK (AP) - The FBI and New York Police Department say they are assessing the credibility of information they received of a possible al-Qaida terror attack against the U.S. on the eve of Election Day.

Officials say Friday that counter-terrorism investigators are reviewing the information that mentioned New York, Texas and Virginia as potential targets.

It wasn't immediately clear how the intelligence came to investigators' attention. An NYPD spokesman says in a statement the information "lacks specificity."

In a statement, the FBI said it was working closely with law enforcement agencies and sharing intelligence reports.

Officials say they regularly assess all possible security threats ahead of major events.

CBS News first reported of the potential threat. The news source said sources told their senior investigative producer Pat Milton that al Qaeda could be planning attacks in three states the day before the election.

CBS said that "it is believed New York, Texas and Virginia are all possible targets, though no specific locations are mentioned."

The Associated Press contributed to this piece.