Terror expert warns 'lone wolves' may have wider extremist ties

An 18-year-old Minnesota man is accused of plotting an ISIS-inspired attack on the Mall of America after reportedly being monitored by the FBI for two years.

An 18-year-old Minnesota man is accused of plotting an ISIS-inspired attack on the Mall of America after reportedly being monitored by the FBI for two years, as counterterrorism expert Ryan Mauro warns that so-called lone wolves may be connected to broader extremist networks.