The third of four suspects was arrested Wednesday in connection with a meth case where a 20-month old child was burned by drain cleaner.
The Pulaski County Sheriff's Office, along with the U.S. Marshal's Fugitive Task Force, found suspect Krystal E. Hampton, 26, at a home on Highway 92 in McCreary County.
Authorities said she was arrested without incident on an outstanding warrant that charged her with Controlled Substance Endangerment to a Child 2nd Degree, which is a class B felony.
Hampton was lodged in the Pulaski County Detention Center.
The child's parents were arrested on Tuesday.
Curtis Anderson, 23, and Brittany N. Helton, 24, were taken into custody at an apartment in Pleasant Hill Square, according to authorities.
The parents were charged with Controlled Substance Endangerment to a Child 2nd Degree, according to investigators.
The couple remained in the Pulaski County Detention Center under a $50,000 cash bond.
The fourth suspect, Brian Herrin, 36, remains at-large, according to investigators.
The Pulaski County Sheriff's Office said the reported incident happened at Herrin's home where items used to manufacture methamphetamine were found.
Investigators said the small child picked up and spilled a cup of drain cleaner, suffering burns to his mouth, face and chest. He was treated at UK Hospital.
Anyone with information that could help authorities find Brian Herrin should call the Pulaski County Sheriff's Office at 606-678-5145.