HOUSTON -- A former Child Protective Services worker is accused of buying drugs from undercover police officers, KPRC Local 2 reported Tuesday.

Brandy Wilcox, 40, was arrested at a gas station on North Main and the North Freeway near downtown Houston Tuesday at about 10:30 a.m. and charged with possession of a controlled substance.

METRO police said they found crack cocaine and other drug paraphernalia when she was taken into custody.

CPS said Wilcox worked at the agency from March until late June. She was terminated for excessive tardiness and absences from work, officials said.

"We had no indication that this was happening," CPS spokeswoman Estella Olguin said. "She had only been employed here about 59 or 60 days.

Olguin said there are no concerns of mistreatment to clients.

"Since she was a probationary worker, they were just transitioning cases to her, and she still wasn't at a point where she was solely responsible for the 17 cases she had on her caseload," she said. "She still had others helping her."

She passed the normal background check and drug screening.

Two others were arrested along with Wilcox.