The analysis did not reveal any evidence of a broader ideological motive, it said. The bomber carefully selected the time and place of the explosion in order to attract attention and destruction while still reducing the likelihood that people would be injured, the FBI said. The man built the explosives and detonated them by himself. According to the report, the investigators consider the suspect to be a lone perpetrator.
The explosion in downtown Nashville, Tennessee, occurred on the morning of Christmas Day. The man had blown up his mobile home and was killed in the process.
The explosion caused extensive property damage and several people were injured. If there had been no warning from the caravan to residents 15 minutes before the detonation, the investigators believe that several people would have been killed.