Warner also transferred another home to the same woman via a quit claim deed a year ago, the news outlet reported.
The blast caused extensive damage not only to buildings in the vicinity of the explosion but also to AT&T's local network.
In addition, investigators from the Tennessee Highway Patrol recovered parts from the RV where the bomb was detonated among the wreckage from the blast, and were able to link the vehicle identification number to an RV that was registered to Warner, officials said.
AT&T's efforts to restore services overnight were waylaid when a fire reignited at the company's downtown office at the site of the blast, but the company said in a statement on Saturday it was deploying portable cell sites to downtown Nashville and across the region.
The baffling explosion rocked downtown Nashville on Christmas morning.
AT&T said today it was rerouting service to other facilities as the company worked to restore its heavily damaged building.
Law enforcement received more than 500 tips that led them to this home on Bakertown Road in Antioch.
Police emergency systems were knocked out across Tennessee.
According to public records, Warner had lived at a home in Antioch, southeast of Nashville, that was searched on Saturday by FBI and U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives officials following the huge Christmas Day blast.
Davidson County records show the 63-year-old Warner deeded his Tennessee properties to a Los Angeles woman on November 25, according to WBIR-TV.
"They came in and told us to get out just in case there was a bomb or something", Rodriguez said.
Investigators said they used DNA to identify the remains as Mr Warner's and matched the van's vehicle identification number to a registration belonging to him.
Federal agents investigating an explosion in Nashville were searching a two-story suburban house on Saturday for clues to explain why a motor home blew up and injured three people in the heart of America's country music capital on Christmas Day.
However, the authorities did not immediately provide details about a potential motive.
"It's just going to take us some time", Douglas Korneski, the special agent in charge of the FBI's Memphis field office, said at a Saturday afternoon news conference. Three people were injured and dozens of buildings were damaged. It shows the RV there as far back as 2007. He said at around 10 a.m. on Saturday federal agents told him to evacuate. The driver left the parking lot and was pulled over by deputies in nearby Wilson County.
Officials haven't connected the explosion in any way to terrorism, and according to one federal law enforcement source, there were no known credible threats in the Nashville area that would have signaled an impending attack on or before Christmas.
A Wilson County dispatcher said the road that was shut down was Murfreesboro Road between Cedar Forest Road and Richmond Shop Road. "We saw no other people involved".
Police said the RV sounded warnings to evacuate and a 15-minute countdown to clear the area. Sheriff's officials did not specify what the box truck was playing.
Metro Police Chief John Drake reiterated that there is no immediate danger to Nashvillians, and that they believe Warner acted alone in the bombing.
They said the blast was probably deliberate, and that it was Warner's remains discovered at the scene.
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