"The replacement charge claims a conspiracy to stage deadly attacks on American soil," prosecutor John C. Anderson said in a news release from the US Department of Justice.
The defendants are Jany Leveille, 36, Siraj Ibn Wahhaj, 40, Hujrah Wahhaj, 38, Subhanah Wahhaj, 36, and Lucas Morton, 41
"No comment at this time, until we have more information on the new allegations. All our customers will plead not guilty to the arbitration next week," he said in an email.
On charges of superstring, Leveille, Hujrah Wahhaj, Subhanah Wahhaj and Morton were also charged with kidnapping and conspiracy for kidnapping.
Leveille has been accused of being illegally in the United States and of having firearms and ammunition. The other four had previously been accused of helping and favoring Leveille and conspiring with her.
All five defendants are now charged with "conspiracy from October 2017 to August 2018 to provide material support and resources, including currency, training, weapons and personnel, knowing and meaning that they should be used in preparation and in transport out of attacks to kill US officials and employees, "according to the Justice Department.
All the defendants are in detention awaiting trial, according to the department.
Some of the accusations of pedophilia brought by the state were filed by a state judge last year due to a procedural error on the part of the prosecution.