Joshua Ellis Crabtree, 21, an inmate held at the Detention Center on various misdemeanor charges since April, was charged with filing a false report, a class D felony.
Graybeal said Crabtree claimed that another inmate had raped him on Jan. 26, which prompted authorities to take him to Johnson City Medical Center where a rape kit was completed.
After investigators interviewed Crabtree, he confessed that he had fabricated the story in an attempt to be housed in a different part of the Detention Center.
Crabtree remained jailed in the Detention Center on $5,000 bond. A Sessions Court appearance was set for Friday morning.