With Super Bowl 50 just weeks away, government officials are concerned that a series of strange events in California could be a precursor to a terrorist attack on the game.
An internal memo circulated between the FBI and the Department of Homeland Security pointed to a series of unsolved attacks on fiber optic cables in California's Bay Area as a potential troubling sign.
Over the past two years, there have been 15 incidents of fiber optic cables being deliberately severed in the region.
According to NBC Washington, the memo suggests that "individuals may be using these incidents to test and prod network durability in conjunction with a more complex plot."
Government officials also warned that drones could pose a dual threat to Super Bowl spectators.
They observed that UAVs could be used by terrorists to deliberately attack the event or be the center of an accident due to an overzealous drone pilot attempting to get a better view of the game.
Locations where revelers may gather around Levi's Stadium, site of Super Bowl 50, are also mentioned in the report as areas which could be vulnerable to an attack.
Despite the concerns outlined in the report, government officials stress that the memo is merely an assessments of potential threats and that there is no specific, credible intelligence to suggest any looming danger.
Source: NBC Washington