St. Louis county prosecutors charged 23-year-old Portis Williams with endangering the welfare of a child and resisting arrest Monday morning.

Investigators say that Williams exposed an 8-month-old baby to fentanyl inside of a north county home. He took the child to the emergency room, then upon leaving he drove off erratically. Police allegedly attempted to stop Williams but they lost him.

The baby went into cardiac arrest and remains in the hospital with brain damage.

Police is asking anyone with information on Williams’ whereabouts to please contact the St. Louis County Police Department at 636-529-8210.

To remain anonymous or potentially receive a reward, please contact CrimeStoppers at 1-866-371-TIPS(8477) if you have any information regarding the incident.