FBI Failed to Investigate Tip About Florida Gunman According to reports, the FBI was contacted on Jan. 5 about Nikolas Cruz's "gun ownership, desire to kill people, erratic behavior, and disturbing social media posts, as well as the potential of him conducting a school shooting." The FBI confirmed that the information from the caller should've been assessed "a potential threat to life." FBI Christopher Wray, FBI Director on Friday Cruz killed 17 people on Feb. 14 in one of the deadliest school shootings in modern U.S. history. He was taken into custody shortly after the massacre and has been charged with all 17 murders.