I Got One Explanation for this, and It Ain't Good for Port Authority Chairman David Samson

The US Attorney in New Jersey is investigating the collection of scandals involving the George Washing Bridge and misappropriation of Hurricane Sandy aid.

On Friday, something odd happened. The US Attorney for New York City issued a subpoena for Port Authority Chairman David Samson.

Technically, it might be in the New York US Attorney's jurisdiction, since there are issues about votes that Samson took where he refused to recuse himself from issues that benefited the legal clients  at his firm.

The votes took place in New York City, so there are issue of whose case this might be.

Well today, the subpoena was rescinded:

A subpoena issued by the federal prosecutor from Manhattan to the Port Authority of New York and New Jersey seeking documents related to Chairman David Samson was rescinded this afternoon, a source with knowledge of the subpoena said.

Samson has been under intense scrutiny by investigators and the media for several votes he has taken on Port Authority actions that may have benefited clients of his law firm, Wolff & Samson.

The subpoena was initially sent to Samson on Friday by the U.S. attorney for the Southern District of New York in Manhattan, said the source, who spoke on condition of anonymity due to the sensitivity of the matter.

However, the subpoena was withdrawn, according to the source, because of an overlapping investigation by Paul Fishman, the U.S. attorney in New Jersey.

I understand why the subpoena was issued, but it is not clear why it was pulled back in 1 business day.

I can only think of one reason why a jurisdictional dispute would be resolved so quickly, and that is that the NJ USA called the NY USA, and explained that Samson is a primary target of their investigation.

I really cannot see any other scenario which would engender such a quick reversal.