WASHINGTON, March 31 -- The U.S. Department of Homeland Security's U.S. Citizenship and Immigration Services issued the following alert:

U.S. Citizenship and Immigration Services has changed the filing location for courier delivery services to the Phoenix lockbox. The facility has moved to Tempe, Arizona, and the filing location for courier delivery services for UPS, FedEx, and DHL has also changed to Tempe. The filing location remains the same when using the U.S. Postal Service.