Livingston man murdered and robbed, 2 men charged Mark Anthony Jacobs, 18 left and Jameous OâNeal Smith, 35 (Source: Polk County Sheriff's Office) By Carrie Provinsal | December 10, 2020 at 4:26 PM CST - Updated December 10 at 4:26 PM POLK COUNTY, Texas (KTRE) - Tuesday morning the Polk County Sherriffâs Office received a 9-1-1 call in reference to a deceased male found in an area off of FM 1988 East in Polk County. Investigators, along with Texas Ranger Ryan Clendennen responded to the scene and an autopsy was ordered. The victim was identified as 19-year-old Brodrick Anthony Cooper of Livingston. Once investigators made a positive identification, they were able to start tracking his whereabouts and who he had associated with within the last 24 hours.