A thread of the known timeline of the #nashvilleexplosion. …

At around 5:30am downtown residents heard gunfire on Second Avenue and calls were made to police. A short time later came another round of gunfire. When police responded they found the RV playing a recorded warning that there was a bomb inside. 2/15

At least six brave @MNPDNashville officers went door to door in the immediate area getting the people who were home on Christmas morning to evacuate. @JohnCooper4Nash called the officers “heroes” and says, “there would have been life lost if it wasn’t for their courage.” 3/15

4/15: At 6:30am, with the recorded warning still playing, the RV exploded.

https://t.co/lOHPEYfrhP

5/15: At least 41 businesses on and around Second Avenue were damaged, many extensively. One building collapsed. The explosion was reportedly heard from Murfreesboro to Lebanon and the fireball was captured in this picture from I-24.

6/15: Amazingly, just three injuries required transportation to area hospitals and none were critical. Two of the injuries were to police officers.

7/15: The FBI and ATF quickly joined the investigation.

FBI Special Agent in Charge Matt Foster says, “this is our city, too. We live and work here. We’re putting everything we have into finding who was responsible for what happened here today.”

8/15: A tip line about the bombing was established at https://t.co/Hj9qkygBnT

9/15: The @NashvilleCVC established a $10,000 reward for information that helps lead to an arrest. The reward has grown to $32,000 with offers to increase it pouring in.

AT&T suffered telephone, internet, and television related outages throughout middle Tennessee, parts of Kentucky and Alabama as a result of the blast. Several communities’ 911 numbers became inoperable as a result. The company says it’s working exhaustively to restore service.

11/15: Around 2pm @Fly_Nashville announced the @FAA had grounded all flights in and out of the city due to telecommunications issues. It took more than three hours to get the airport back up and fully running, though some delays are still expected.

12/15: Law enforcement officials say they found what they believe could be human tissue near the blast site that requires testing. They did not specify whether they think it could be from a suspect or from a potentially unknown victim.

13/15: @JohnCooper4Nash announced a curfew for downtown Nashville beginning at 4:30pm Christmas Day and running through 4:30pm Sunday in an effort to aid investigators in their search and to protect local businesses.

14/15: The area under the curfew spans from Broadway to the south to James Robertson Parkway to the north and from First Avenue to the east to Fifth Avenue to the west.

15/15: In the wake of this tragedy, @NC5 has partnered with the @CFMT to establish the “Nashville Neighbors Fund” to support downtown residents and businesses affected by the bombing. Here's how you can help.

https://t.co/bMq0OE036A