St. Bernard Sheriff’s Office and FBI investigating disappearance of 5-week-old Slidell boy and a woman babysitter who was last seen Friday in Violet;

Missing boy, Tristan Douglas of Slidell, last seen in St. Bernard Parish.

Sarah Harris of Violet, babysitter who is missing with the infant.

The St. Bernard Parish Sheriff’s Office and the FBI are investigating the disappearance of a 5-week-old Slidell boy and his woman babysitter who was last seen Friday when the boy’s mother dropped him off at the babysitter’s residence in Violet in eastern St. Bernard, Sheriff James Pohlmann said.

Anyone with information should call the Sheriff’s Office at (504) 271-2501 or the FBI at (504) 816-3000.

There has been no information on the whereabouts of the babysitter, Sarah Harris, 48, of Guerra Drive in Violet, or the boy, Tristan Douglas, Sheriff Pohlmann said.

Harris is believed to be driving a 2014 black 4-door Dodge Charger with Louisiana license YCR602.

The disappearance was initially reported by the child’s mother, Takisha Douglas of Slidell, to New Orleans police on Friday. Both the mother and Harris’ boyfriend reported they last spoke to Harris at midday Friday by cell phone and she said she was driving to a grocery store in New Orleans. That was the last she has been heard of, authorities said.

Calls to Harris’ cell phone have since been going to voice mail.

The mother has known Harris for several years, Sheriff Pohlmann said, but this was the first time she had left the infant with Harris to babysit.

The St. Bernard Sheriff’s Office is handling the investigation because the last place Harris and the child were seen was at her residence in St. Bernard when the mother dropped him off, the sheriff said.

The babysitter was given a quantity of powdered baby formula for the child, authorities said.