(Photo : Terry Wyatt/Getty Images)
Police close off an area damaged by an explosion on Christmas morning on December 25, 2020 in Nashville, Tennessee.

Investigators in the Nashville explosion believed that the suspect blew himself up in the bombing.

Anthony Quinn Warner, 63, who was earlier named as a person of interest in the Nashville bombing, matched the DNA evidence found at the scene, said a report from ABC News.

"Anthony Warner is the man believed to be responsible for this horrible crime," Metropolitan Nashville Police Chief John Drake said at a news conference.

There was also other evidence linked back to the suspect. Douglas Korenski of the Federal Bureau of Investigation's Memphis field office said an identification number from an RV was traced back to a vehicle registered to the suspect. 

Korenski added that no one else could be seen at the blast site at the time of the incident. 

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Donald Q. Cochran, U.S. Attorney for the Middle District of Tennessee, told NBC News that Warner was "present" when the bomb exploded, taking his life in the process.

Officials declined to say if they determined what kind of explosives were used. The explosion occurred around 6:30 a.m. on Christmas Day, as officers responded to a nearby gunfire report.

Motive to Nashville Blast Remains Unknown

Korenski said a motive has yet to be established as they work on hundreds of tips and leads.

Federal officials said Sunday in a report from The Associated Press that the suspect appeared to have acted alone.

No one other than Warner was believed to be involved in that morning's explosion that damaged dozens of buildings and caused injury to three people.

Agents also found that a Google Maps Street View image of Warner's address showed an RV similar to the one in the blast.

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Authorities said the RV appeared to have been parked in front of an AT&T transmission building around 1:22 a.m. on Friday, although it is unclear if the suspect was actually targeting the building.

Korenski said the FBI is "aware of certain things online and we're looking at every possible motive." He urged those who knew Warner or any information on him to use the FBI's tipline to determine the motive. 

Hundreds of FBI personnel are working on the investigation from different filed offices. There were special agents, analysts, and professional staff working alongside partner agencies such as the Bureau of Alcohol, Tobacco, Firearms and Explosives and state and local investigators. 

Officials Assure Safety Despite Nashville Bombing

Metro Nashville Police assured the residents that the city is not under any immediate threat.

Police Chief Drake said: "Nashville is considered safe. There are no known threats against this city."

It will take some time for the area to get back to normal since officials had to check for the structural integrity of nearby homes, but there was no serious physical harm to nearby residents.

Nashville authorities received praise for saving lives during the massive bombing as they quickly evacuated people with a recording counting down the bomb's detonation.

Drake acknowledged the efforts of his personnel, who "didn't think about their own lives" but only protecting the citizens of the city.