FBI and Tennessee investigators are trying to figure out who drove an RV into downtown Nashville with a bomb inside that exploded. Some Nashville news media is saying that a 63-year-old man is a person of interest, but the FBI has not confirmed. Surveillance video captured someone driving the RV into downtown Nashville. Six Nashville police officers arrived and then a pre-recorded message could heard saying “If you can hear this message. Human remains were also found but its unclear if its the same person driving the RV that destroyed a section of downtown Nashville on Christmas Day.