Leaders of the country's largest police organizations were briefed by the FBI late last week after they were told to be prepared for possible retaliation after the al-Qaida leader was killed, USA Today reported.
Philadelphia Police Commissioner Charles Ramsey, president of the Major City Chiefs Association, said information presented in the classified briefing yielded "no direct threats at all."
However, the FBI and the Department of Homeland Security warned local police agencies that retaliation could be taken by a lone attacker, similar to the suspect in the 2009 shooting at Fort Hood, Texas, in which 13 people died.
USA Today said the FBI's briefing and alerts are signs of a shift in the federal government's dealings with local law enforcement since the Sept. 11, 2001, terrorist attacks on the United States, when some police officials said they thought they were being bypassed in subsequent investigations.
"We recognized long ago that they [local police] are on the front lines in this [counter-terrorism] effort, and it just makes sense to arm them with as much information as possible," FBI spokesman Paul Bresson said.
With the exception of a potential interest in the U.S. rail system, made public last week, Deputy Commissioner Paul Browne said no new threat information specific to New York or other parts of the United States surfaced from the material collected from the Pakistani compound, USA Today reported.
Boston Police Commissioner Ed Davis said he'll keep extra officers on patrol as analysts review the data.
"The content [of the seized material] is not as specific as I would have expected," Davis said. "Maybe they have not gotten to the meat of it yet."