AP — Jalen Blake, 2, who died June 28, is the latest child to die while under the oversight of the Indiana Department of Child Services, an agency that one critic charges needs more oversight.

State child welfare officials allowed the Cannelburg boy to remain in his mother’s custody after the child tested positive for methamphetamine, and the boy suffered a fatal blow to the head 17 days later.

DCS left Jalen with his mother, Vadney Blake, even after learning on June 6 he had tested positive for meth, according to court records that showed DCS caseworker John W. Potts spoke with Blake on June 9 about the test results but did not remove Jalen from her custody.

Potts, one of the 800 new caseworkers hired as part of the reforms launched by Gov. Mitch Daniels, resigned from DCS on July 12, the Indianapolis Star reported Tuesday. A message seeking comment from Potts was left Tuesday at a home telephone number in Montgomery listed in that name.

DCS spokeswoman Susan Tielking said state confidentiality rules barred her from discussing specifics about the Blake case, but she said the agency was investigating the decision to leave Jalen in his mother’s care. Generally, the agency would remove a child who tests positive for methamphetamine or other illegal drugs, she said.

The meth showed up in a urine sample the boy gave May 30 at a doctor’s office. Police said the child was fatally injured around June 26, and he died from head injuries June 28 at Riley Hospital for Children in Indianapolis.

A preliminary coroner’s report the Times-Herald obtained Monday listed cause of death as an anoxic brain injury, or oxygen deprivation, of unknown cause.

Daviess County Sheriff’s Detective Gary Allison, who is investigating the case, said Tuesday, Jalen did not have meth in his system when he died, nor at any point after the May 30 urine sample. He said the lack of oxygen to Jalen’s brain was a result of blunt force trauma.

Allison said he knows how Jalen received the blow to the head but is not ready to release that information yet.

A police affidavit said Blake admitted abusing Jalen and suspected a man she had begun seeing, Jeff Truelove, 40, of Jasper, might have abused the child, too. Truelove committed suicide July 14 at a cemetery near Loogootee after fleeing police officers.

Blake, 22, told investigators that she and Truelove had smoked meth together on several occasions in the presence of Jalen.

On July 16, Blake was charged with neglect and conspiracy to make methamphetamine. She remained jailed Tuesday in the Daviess County Security Center on $500,000 bond. A message seeking comment was left by the Associated Press at the office of her defense attorney, Anthony D. Quinn of Jasper.

Dawn Robertson, a spokeswoman for Honk for Kids, a group that helps families dealing with DCS, said Jalen’s death reinforces the need for an independent ombudsman to oversee the state agency.

“This is what makes the public question what is going on with this agency. Too many children are not being protected,” Robertson said. “We need accountability, and we need it now.”

Two Indianapolis girls also have died while under DCS supervision within the past 10 months.