NASHVILLE, Tenn. (AP) — Federal authorities have identified the man they say is responsible for the Christmas Day bombing that tore through downtown Nashville and say that he died in the explosion.

Investigators used DNA to link the man, identified as Anthony Quinn Warner, to the blast.

They say they believe no one else was involved.

This is video of Friday morning’s explosion recorded by an MNPD camera at 2nd Ave N & Commerce St. pic.twitter.com/3vaXhoUOAR

— Metro Nashville PD (@MNPDNashville) December 28, 2020

Warner had experience with electronics and alarms, according to public records, and had worked as a computer consultant for a Nashville realtor.

Investigators have not uncovered a motive for the act nor was it revealed why Warner had selected the particular location for the bombing, which damaged an AT&T building and caused widespread cellphone and communications outages in several Southern states.

BREAKING: This is the RV that exploded on 2nd Ave N this morning. It arrived on 2nd Ave at 1:22 a.m. Have you seen this vehicle in our area or do you have information about it? Please contact us via Crime Stoppers at 615-742-7463 or online via https://t.co/dVGS7o0m4v. @ATFHQ pic.twitter.com/JNx9sDinAH

— Metro Nashville PD (@MNPDNashville) December 25, 2020