Federal officials are warning of a possible terror plot this Fourth of July weekend somewhere in the United States.

Knoxville Police Chief Dan Losada says they have a contingency plan in the event of a terrorist attack. Losada says the department takes threats like these seriously due to several important pieces of infrastructure in and around the city.

Losada says one of the best ways law enforcement can prevent a terror incident is by tips from citizens. He asks that citizens be vigilant during the July 4th holiday and report anything suspicious.