A man and a woman have been detained following the tragic death of a 4-year-old boy who was discovered “unresponsive” near a Dairy Queen in Wisconsin.

Authorities have yet to release the names of the 31-year-old woman and 21-year-old man, but as of Monday, both remained in custody, as confirmed by the West Allis Police Department. It has been reported locally that the woman is the mother of the deceased child, Dante Campbell, and the man is her boyfriend.

According to court documents reviewed by Fox affiliate WITI in Milwaukee, the incident unfolded on Saturday morning when the couple arrived at a friend’s house to drop off Dante’s twin sister. During this visit, the boy’s mother allegedly made a shocking statement.

Investigators reported that the mother was heard saying, “I need to go to the hospital my son is not breathing, I think he is dead.” The vehicle then quickly left the scene.

Soon after, law enforcement became involved. Around 8 a.m., the West Allis Police Department received a call from a woman stating she was driving to the hospital with her unresponsive son.

The dispatcher is said to have asked the woman to stop the car given that there was a West Allis Fire Department station nearby. As the woman agreed and pulled into the parking lot of an area Dairy Queen, the dispatcher gave the woman instructions on how to do CPR, authorities said.

Personnel with the fire department arrived minutes later “and began rendering care to the child.” They were followed by police officers, and authorities brought Dante to the hospital. He was later pronounced dead.

Detectives began investigating what happened that led to the child’s death — and the man and woman were subsequently arrested “pertaining to their involvement in this incident,” the police department said.

The investigation has included speaking with both the mother and her boyfriend. The woman reportedly told police that her boyfriend had been watching her children, and he was “heavy-handed” with his discipline.

According to the man, he found Dante that morning “stiff” because the boy had fallen down a flight of stairs the previous evening, noting that the child “smelled bad,” per WITI. Investigators appeared skeptical, reportedly believing the boy’s bruises were not consistent with a fall down the stairs.

Inside the home where Dante was staying were three other kids, authorities said, and a bathroom in the residence is said to have had a “strong smell of rubbing alcohol” while the kids’ bedroom had the “smell of urine.”

Dante was in the care of other guardians up until recently, local NBC affiliate WTMJ reported, with other family members saying he had been living with relatives like Rosy Hudson — a woman who described herself as Dante’s aunt — until returning to his mom’s care.

Police said as of Monday that they were not looking for any other suspects in Dante’s death. The Milwaukee County District Attorney’s Office told Law&Crime that the investigation is ongoing and charges are still being considered.

A GoFundMe for Dante said “he was taken from us over this last weekend by the very people that were supposed to keep him safe in what we can only compare to a true crime documentary.”

It added: “Dante was a happy and loving boy that deserved so much better than what happened to him. He loved life and had the most amazing smile and laugh. His memory will forever live on with those of us who truly loved and cared for him.”