UPDATE: Walker County Sheriff Steve Wilson says 8-year-old Bentley Robbins was the boy found dead behind his family's home in Chickamauga.

He says they got the call around 8:00 pm last night after the child's maternal grandmother, and mother's boyfriend found him in a wooded area behind the house. 

"Went into the wooded area behind the home, probably about 30 to 35 ft. or so there's an old building that's dilapidated, and the boyfriend and the maternal grandmother found him lying there," said Sheriff Wilson. 

He says they're investigating all possibilities, there were no obvious signs of the cause of death. 

"It is so early in the investigative process that we have to look at all areas of motive, or was it a natural death, or was it an accidental death," said Sheriff Wilson. 

Sheriff Wilson says they learned that Robbins was sent home early from Chattanooga Valley Elementary School after feeling sick on Thursday. 

"He did become ill during the early morning school hours yesterday morning," said Sheriff Wilson. 

He says they don't know at this point if that's related to his passing. 

Walker County Superintendent Damon Raines sent us this statement:

"We are saddened by this loss and are keeping this family in our thoughts and prayers."

Sheriff Wilson says they're still trying to establish a time line, including which adult had responsibility of the child at the time. 

"There is some confusion at this point as to who may have had responsibility and watching him, and we're trying to get to the bottom of that," said Sheriff Wilson. 

The GBI Crime Lab is conducting an autopsy to determine a cause of death.

The autopsy for Bentley has not yet been released.  

ORIGINAL STORY: The Walker County Sheriff’s Office is investigating the death of a child who has been found behind his own home on Thursday night.

The discovery was made around 8:00 p.m. on Old Grand Center Road in Chickamauga.

Sheriff Steve Wilson says the body of an 8-year-old boy was found in a wooded area behind his home.

Sheriff Wilson says a cause of death has not been determined but says it’s unusual to find the body of a child that has not been reported missing.

The name of the child has not been released at this time.

Sheriff Wilson says the GBI is assisting with the investigation and District Attorney’s Office has been notified.

Channel 3 has a crew that is working to learn more.

Stay with the WRCB app for updates to this developing story.