It is a similar methodology to Timothy McVeigh. Reports the FBI may have a person of interest.

The FBI (click here) is probing whether Nashville's Christmas Day bombing was deliberately designed to target police officers, amid reports that investigators have found human remains at the site of the blast. The RV which exploded is pictured

26 December 2020
By Andrew Court, Francis Mulraney, and Jennifer Smith

Explosion occurred on 2nd Avenue (click here) in Nashville's downtown at 6.40am on Christmas morning 

The blast injured three people and caused massive damage

Cops had been called to the area a short time before the explosion amid reports of a shooting

However, when they arrived at the scene they discovered a parked RV playing a recording which claimed the vehicle would explode 

The FBI is now investigating whether the bomb may have been designed to deliberately target police officers as they were lured into the area

Meanwhile, possible human remains have been discovered near the site of the explosion

Dramatic new videos have also been shared; one  shows buildings shaking during the impact of the blast while another shows a man run for cover...

The police did exactly what they should have done, warn people living in the surrounding buildings to evacuate to a safe distance. If he was targeting police he didn't understand police work.

McVeigh's rental truck was a large explosion; so was the bomb-RV filled with fertilizer? There was no rental truck because it would have been investigated if it was parked in that area. The bomber spent money on the bomb if that RV was purchased for this purpose alone. It doesn't really appear to be an old van. There is only one axle (click here) in the rear. That would have limited the amount of explosives. There is something on the passenger seat that is basically unrecognizable. The driver appears to be Caucasian.

In the foreground is what appears the grill of the RV in flames. The explosion didn't blow up the engine compartment. It is just burning.

The damage to the downtown area was by concussion and not the direct explosion. The immediate area to the explosion is charred. Other areas effected are not charred. It was the massive movement of air from the area among buildings.