Police in Georgia on Sunday released a new image of a suspect seen with a 13-year-old murder victim in the hours before he was fatally shot.

Jamiren Crosby was found dead around 4 p.m. on the 2600 block of Parkway Trail in Lithonia on Sept. 19, the DeKalb County Police Department said. The 13-year-old had been shot in the wood line behind the townhomes and police have been investigating his death as a homicide.

Police released home surveillance video that shows Jamiren walking through a backyard in a nearby neighborhood at 3:11 a.m. on Sept. 18 with an unknown male who was wearing a black hoodie, face mask and pants.

While police are searching for the suspect in the video for questioning in the investigation, Jamiren’s mother told FOX5 Atlanta that she hopes the new images will help lead authorities to the murderer or force him to turn himself in.

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jamiren and unknown male walking through backyard

Jamiren Crosby, 13, was seen in video released by police this week walking through a backyard with an unknown male, pictured in the lower left inside the red box, early on Sept. 18, the day before his body was found. (DeKalb County Police Department)

The teen’s mother said her son knew the male in the video but did not elaborate.

"I know who Jamiren hangs with, I know exactly who he was," his mother said, referencing the video. "They have a history together."

Jamiren Crosby

Jamiren Crosby, 13, was a straight-A student and had just joined a football team, his mother told the station. Crosby's body was found with a gunshot wound in a wooded area on Sept. 19. (DeKalb County Police Department)

She told the station that Jamiren was a straight-A student and played football. She last saw him alive on Sept. 17 when he left home with some friends around 2 a.m.

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Authorities asked anyone with information about Jamiren’s death or who can identify the suspect to contact the DeKalb County Police Department’s homicide unit at 770-724-7850 or Crime Stoppers at 404-577-8477.