At least 48 high-risk Islamic State group suspects are being tracked by FBI elite squads in the U.S.
According to information obtained by Fox News, “There is a very significant number of people that are on suspicious watch lists, under surveillance," Republican Sen. Dan Coats of Indiana said.
"The FBI together with law enforcement agencies across the country are engaged in this. It takes enormous amount of manpower to do this on a 24/7 basis. It takes enormous amount of money to do this," Coats explained. Coats refused to give any additional specifics to Fox News.
The elite FBI teams are used for espionage, mob violence and high-priority terrorism cases. The squads contain at least a dozen agents assigned to each case, working round-the-clock surveillance, to assess the risk of the suspects.
"It is a big resource drain. Yes it is. Almost overwhelming," Coats said about the demand placed on the FBI. "There will be a lot of people over the Thanksgiving weekend that will not be enjoying turkey with their family. They'll be out there providing security for the American people and the threat is particularly high during this holiday period."
FBI Director James Comey said that “dozens” of suspected radicals have been under “tight surveillance.”
"Together we are watching people of concern using all of our lawful tools. We will keep watching them and if we see something we will work to disrupt it," Comey said during his public appearance with Attorney General Loretta Lynch.
An FBI spokesman would not comment to Fox News on the high-risk cases, or the use of elite surveillance teams.
According to The Washington Post, 67 men and women across the U.S. have been charged with alleged Islamic State activities as of Nov. 25. Men outnumber women 5 to 1, and the average age of the suspects is 25.
The most suspects have been apprehended in New York and Minnesota.