NASHVILLE, Tenn. (WKRN) — Nashville International Airport temporarily halted flights on Friday afternoon due to telecommunications issues associated with an explosion in downtown Nashville on Christmas morning.

A tweet from Nashville International Airport says that flights were anticipated to resume by 3 p.m.

A spokesperson for Nashville International Airport earlier told News 2 that the airport activated enhanced security protocols but did not elaborate further on what the changes were.

The explosion happened in the area of Second Avenue and Broadway near Commerce Street occurred around 6:30 am Friday. Heavy black smoke could be seen rising above the affected area.

Anyone with information about this case is asked to contact Crime Stoppers at 615-742-7463.

The FBI has also established a digital tip line for anyone with information about the explosion. Those who prefer to call can do so by dialing 1-800-CALL-FBI.