Tanner L. Brock was taken into custody in Alvord, in Wise County, on suspicion of murder, the Denton County Sheriff’s Office said.
Brock killed Jade Harris, 20, the sheriff’s office alleged. Investigators did not release a motive.
Harris, who had been reported missing Oct. 25, was found dead on Sunday. She was the mother of a 2-year-old girl and a 1-year-old boy, according to a GoFundMe account started to raise money for funeral expenses and her children.
Harris’ body was found by people who were fishing on the creek, near Farm Road 2449, the sheriff’s office said.