CHAPEL HILL - The John Edwards presidential campaign has changed mail operations for its national headquarters after a beeping package forced the evacuation of part of the Southern Village shopping area last week.

Colleen Murray, a spokeswoman for the campaign, offered no details on how mail and packages would be handled now.

"We have taken care of it," she said. "But we are not releasing information about what we've done or will do."

On Thursday, a beeping FedEx package arrived at the campaign headquarters, prompting police, firefighters and a bomb squad to evacuate the area surrounding the office in Southern Village, a development off U.S. 15/501 south of downtown Chapel Hill.

Law enforcement officials found digital watches inside.

It was the third time mail addressed to the campaign led to evacuations. In March, an envelope with a powdery substance also emptied the campaign headquarters. In May, a second envelope addressed to Edwards led to an evacuation at a Chapel Hill post office.

The powder was harmless.