HARROWING new details have emerged in the case of an abandoned baby who was discovered just hours before four people were found dead. 

A seven-month-old girl was found strapped in a car seat on a random driveway in rural Tennessee on Tuesday, sparking mystery. 

The baby was found in Tigrett – around 80 miles from Memphis – but in a shocking turn, the bodies of her parents James “Matthew” Wilson, 21, and Adrianna Williams, 20, were found dead in the woods.

Wilson and Williams’ remains were discovered in Tiptonville, which is around 40 miles north of Tigrett. 

But, the baby’s grandma, Cortney Rose, 38, and its uncle Braydon Williams, 15, were also found dead, heightening the mystery further. 

A homicide probe is underway as cops hunt for the person or people responsible.

The bodies were found near Reelfoot Lake – an area that is popular for fishing and boating.

The baby was found on the driveway at around 3pm local time but hours later, a 911 call was made, as reported by the NBC affiliate WMC-TV.

In the audio, Rose and her daughter were reported missing. 

And, the person who made the call just before 10:30pm was searching a home with a flashlight.

At this time, it’s not sure what link the 911 call has to the case of the abandoned baby and relatives deaths.

The baby was taken to the hospital after it was found on the driveway.

The heat index in Tigrett had reached 113 degrees in the afternoon the baby was abandoned.

Cops revealed they were probing a car that they suspect dropped off the car.

They identified it as a dark minivan or a white SUV-type motor.

But, police do not know who dropped the child off in the first place.

Investigators said they wanted to speak with Rose, Williams, and James Wilson before they were later found dead.

After confirming the identities of the victims, cops are trying to catch the suspect or suspects believed to have killed the four people.

Jeff Box, the Dyer County Sheriff, has vowed to uncover the truth behind the mystery.

But Dyer County officials suggest the relatives death were not random. 

Friends have spoken fondly about Adrianna and her partner. 

“Adrianna was the sweetest person, she loved being a mama,” Amy Anderson told WREG-TV.

She also described Wilson as a “wonderful daddy.”

Locals who live close to the Reelfoot Lake have also spoken of their horror. 

“It makes me sick, yeah it does,” William Thomas, who has nine grandchildren, told the CBS affiliate KFVS-TV.