A package containing a pipe bomb was received Wednesday at an off-site mail facility for American Century Investments, Kansas City, Mo., confirmed American Century spokesman Chris Doyle. The package arrived with a note that an employee thought was "of a threatening nature," according to Mr. Doyle, and the employee called police, who defused the device.
Mr. Doyle declined to say how the package was addressed, citing an ongoing investigation. He said this was the first threatening incident at the company that he knew of and that the firm has security measures in place but is reviewing them.
A similar pipe bomb was received by mail to an office building in downtown Chicago on Thursday, according to published reports. Dan Taylor, a regional spokesman for the U.S. Postal Inspection Service in St. Louis, said investigators are trying to see if there is a link between the two devices.
Mr. Taylor referred other questions to Chicago-based postal inspection spokeswoman Wanda Shipp, who was not available for comment. Michael P. Schmitz, an ATF spokesman, was not available for comment, and the Chicago FBI office directed all questions to Ms. Shipp.