Britney Spears has requested Federal Bureau of Investigation (FBI) protection after receiving a string of death threats from an alleged stalker. The Toxic hitmaker called on the agency after she was reportedly sent a number of letters, including one on how to make a bomb. The 26-year-old has also received several packages containing notes on the Middle East and Israel. A Los Angeles Police Department spokesman says, "We have been looking at allegations that have cropped up in the past couple of months." A FBI spokesman adds, "We cannot comment on ongoing investigations."