Federal authorities said Monday that they foiled a plot to bomb multiple sites of two U.S. companies on New Year's Eve in Southern California after arresting members of an extremist anti-capitalist and anti-government group. The four suspects were arrested Friday in the Mojave Desert east of Los Angeles as they were rehearsing their plot, First Assistant U.S. Attorney Bill Essayli said during a news conference. Officials showed reporters surveillance aerial footage of the suspects moving a large black object in the desert to a table. Officials said they were able to make the arrests before the suspects assembled a functional explosive device.