By David Madden

CAMDEN, N.J. (CBS) — A federal grand jury is now investigating the Delaware River Port Authority.

Word leaked out that the authority had been served with subpoenas, but no one is saying exactly what the feds are looking for, or why.

“We can confirm that the Delaware River Port Authority received a grand jury subpoena last week,” DRPA spokesman Tim Ireland told KYW Newsradio today.  “We are cooperating fully, and our employees have been instructed accordingly.”

The bi-state agency, which runs four bridges across the Delaware and the Patco rail line, put a number of reforms in place after getting a great deal of public heat over the way in which toll money had been spent and whether politics had anything to do with it.

A New Jersey comptroller study questioned the past practices, but found nothing illegal.

The US attorney in Philadelphia would neither confirm nor deny the existence of any such probe.

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