(CNN) A federal grand jury formally indicted Army soldier Jarrett William Smith, who allegedly discussed bomb-making techniques and suggested targeting a news network that sources say is CNN, according to court documents filed Wednesday.

Smith, 24, was stationed at Fort Riley in Kansas before his arrest on Saturday. He allegedly discussed with a confidential source to the FBI that "the headquarters of a major American news network would be a suggested target, utilizing a vehicle bomb," an FBI agent wrote in court papers. The complaint goes on to say that, according to an FBI bomb technician consulted by the investigating agent, Smith's instructions on how to make a vehicle bomb would not have resulted in a viable explosive device.

According to Wednesday's indictment, Smith faces two counts of distributing explosives information, including "detailed six-step instructions for constructing an explosive device" and a recipe for napalm. His attorney has not responded to requests for comment from CNN.

Smith is also accused of communicating a plan to attack a home in Michigan, and threatening to set fire to the home of someone identified by the initials "D.H."

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