Zachary Adams, the man charged in connection to the murder of missing nursing student Holly Bobo, has been charged with an additional criminal count Tuesday.

Adams, 29, is now charged with a single count of coercion of witness, according to the Tennessee Bureau of Investigation.

Adams, who is being held at the Chester County Jail without bond, pleaded not guilty last month to kidnapping and murder in Bobo's disappearance.

"We will not tolerate any kind of coercion in criminal cases," TBI Director Mark Gywn said in a press release. "But in a case like this, which has attracted so much interest and required so many resources, rest assured we will fight hard to protect the integrity of our work, as we seek justice for the family and friends of Holly Bobo."

The Bobo case is still under investigation. If you have information that could help authorities, call 1-800-TBI-FIND.

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