Earlene Crippen, 45, was taken into custody in Baytown, relatives told Eyewitness News.
Deputies said the 1-year-old boy and his grandmother disappeared from his home on Avenue A around 7 a.m. Saturday.
Crippen did not have permission to leave with Jaden, deputies said.
Authorities said because of Crippen's history of drug abuse, they believed the child could be in danger.
We are hoping to learn more details on how the boy was found later today.
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