Investigators with the Stephenville Police Department and Erath County Sheriff's Office have arrested all but one of 17 suspects identified in a nine-month joint narcotics investigation. 

An anonymous tip led to the arrest of Nicole Rachell Cehand, 22, in Abilene Monday. She was charged with three counts of manufacture and delivery of a controlled substance and is being held in the Erath County Jail on a combined $50,000 bond.

Cehand was one of three suspects police had not been able to locate following the initial round of arrests.

Brian Patrick Butz, 42, was arrested in Hamilton Aug. 25. Investigators are still searching for Donjel Lamont Walker, 26, according to Police Chief Patrick Bridges.

"We are not sure where he is hiding," Bridges said. "We are still looking for him."

Crime Stoppers is offering a cash reward for information leading to Walker's arrest. Tips can be made anonymously by calling 254-965-CASH.