They are some of Tennessee's most notorious criminals, wanted for crimes like murder and rape.

The TBI names them "Top Ten Most Wanted," but how does the bureau decide whether a fugitive is one of its most wanted?

TBI Special Agent in Charge Josh Melton said there are specific criteria TBI considers: it must be a violent crime or major drug related offense committed in the state of Tennessee, and the local law enforcement agency has to ask them for help.

"If we didn't have an immediate capture of that fugitive and that puts the citizens of the state of Tennessee in imminent danger, obviously that individual is going on TBI's top ten," said Melton.

In recent weeks, the TBI has added and captured two suspects from its top ten list: Steven Wiggins, arrested in the killing of a Dickson County Deputy, and Daniel Peters, accused of first degree murder in Bean Station.

Both were arrested within days of being added to the list, but TBI said some cases can last years.

One fugitive has been on the list and at large since it was created in 1993. Robert Sanders escaped from Tennessee State Prison nearly three decades ago.

Currently there are no fugitives from East Tennessee on the list, but the bureau is still hunting for two suspects from Chattanooga and one from Washington County.

Adding names to the top ten list helps raise the public's awareness and adds a reward for tips.

"We see a lot of those cases come in where there is difficulty finding that person and there's monetary incentive that we can put out looking for rewards that help bring information," Melton said.

Since the list was created, TBI said it has helped lead to the capture of more than 400 fugitives.