Health Commissioner Thomas Farley was forced to resign after cremating victims' remains from the 1985 police attack instead of returning them to family.
Anthony Quinn Warner's then-girlfriend told officers he was building bombs in his RV. Police knocked on his door but did not search his home or vehicle.
The vehicle is heard playing audio warnings just before it explodes, sending broken glass and debris throughout the area.
Investigators linked Anthony Quinn Warner, 63, to human remains at the bomb site in downtown Nashville using DNA. Police believe no one else is involved.
ISIS has claimed responsibility for the attack at an Afghan wedding hall in a Shi'ite neighborhood.
"A rational observer may have brushed off Trump’s tweets as hyperbole, but Mr. Sayoc took them to heart," his attorneys wrote.
“We can be glad that the farmer was not in the field,” a city spokesman said of the weekend blast.
Although Christians are currently a minority in Sri Lanka, Christianity has a long history in the island nation.
The nationwide social media blockage came after eight blasts swept through Sri Lankan churches and hotels on Easter Sunday, killing more than 200 people.
More than 500 people were also wounded in the attacks.