An image taken from video footage shows downtown Nashville, Tennessee, in the seconds before an explosion rocked the area on Dec. 25, 2020. (WTTW News via CNN)

Many details surrounding the Christmas Day bombing in downtown Nashville remain unclear, but the incident has renewed concerns about the rise of domestic terrorism, and the proliferation of racist ideology by white supremacists. 

Investigators remove items from the basement of a home Saturday, Dec. 26, 2020, in Nashville, Tenn. (AP Photo / Mark Humphrey)

The man believed to be responsible for the Christmas Day bombing that tore through downtown Nashville blew himself up in the explosion, and appears to have acted alone, federal officials said Sunday.

Investigators walk near the scene of an explosion Saturday, Dec. 26, 2020, in Nashville, Tenn. (AP Photo / Mark Humphrey)

Federal agents converged Saturday on the home of a possible person of interest in the explosion that rocked downtown Nashville as investigators scoured hundreds of tips and leads.

Emergency personnel work near the scene of an explosion in downtown Nashville, Tenn., Friday, Dec. 25, 2020. Buildings shook in the immediate area and beyond after a loud boom was heard early Christmas morning.(AP Photo / Mark Humphrey)

A recreational vehicle parked in the deserted streets of downtown Nashville exploded early Christmas morning, causing widespread communications outages that took down police emergency systems and grounded holiday travel at the city’s airport.