Tennessee's top law enforcement officials attended a hearing in Nashville to make the public more aware of the problem of human sex trafficking in the state.

Safety Department Commissioner Bill Gibbons and Tennessee Bureau of Investigation Director Mark Gwyn heard from concerned Tennesseans and anti-trafficking groups on Tuesday.

A recent TBI report showed that over a 2-year period there were about 4,000 known incidents of human trafficking in Tennessee. Gibbons said that number is probably worse because many incidents are unreported or hidden.