Via NPR:
More than a year before the explosion that rocked Nashville last week, Anthony Warner’s girlfriend told police that he “was building bombs in the RV trailer at his residence,” according to a police report filed in August 2019.
Yet the report indicates Nashville police never made contact with Warner. Despite having the report in their database, police did not share it with the public until Tuesday evening — four days after Warner drove his RV to downtown Nashville, Tenn., and detonated a bomb out of the vehicle, killing himself and injuring at least seven people.
Whether law enforcement had any warning about the bombing has been an open question since the explosion.