Investigators with the Milton Police Department and Crime Stoppers Greater Atlanta are asking the public's help with an attempted armed robbery case and murder of 19-year-old Christopher Walker, which occured March 12 in the Avensong subdivision in Milton.

A reward of up to $5,000 is being offered for information leading to the arrest and indictment of the person or persons responsible.

Milton police believe it was a stranger on stranger crime. They are requesting the public's assistance in identifying three persons of interest who may have information regarding the crime.

The description of the first person of interest is a black male in his late teens to early 20s with dreadlocks that are below the ear but not shoulder-length and what appears to be a small goatee with a strip down the center of his chin. He is approximately 6 feet-2 inches tall, 170 pounds, with a slender build and dark skin.

The second person of interest is a black male in his late teens to early 20s, approximately 5 feet-7inches to 5 feet-9 inches tall and 210 pounds, with short hair, medium build and a medium complexion, who was wearing a skull shirt.

The third person of interest is a black male somewhere in his 20s, approximately 5 feet-7 inches to 5 feet-9 inches, with short facial hair, who was wearing a stripped shirt.

Descriptions may not be exact.

Any information on the case can be submitted anonymously to the Crime Stoppers Atlanta tip line at (404) 577-TIPS (8477), online at www.crimestoppersatlanta.org or by texting CSA and the tip to CRIMES (274637). Those submitting tips do not have to give their name or any identifying information to be eligible for the reward.