Justice Department 's response is ` ` to hold Libya accountable , '' he says . The FBI team arrived Wednesday and worked through Thursday , an official says . The FBI investigation had been suspended over security concerns . Read more : In revision , U.S. intelligence believes Libya attack a terror assault . The killings in Libya spawned scrutiny of Libya and a political uproar in the U.S .
Justice Department 's response is ` ` to hold Libya accountable , '' he says . The FBI team arrived Wednesday and worked through Thursday , an official says . The FBI investigation had been suspended over security concerns . The killings in Libya spawned scrutiny of Libya and a political uproar in the U.S .