The robbery happened shortly before 8:30 p.m. Thursday in the 8800 block of Millicent Way.
The victim told police that he was robbed while in the process of purchasing a cell phone from the suspect whom he'd met on Craig's List.
Investigators say the suspect fled in his vehicle once the victim wrestled the weapon away from him.
A short time later, officers located Jakory Lang, 22, on West 70th St. near Kennedy Dr. and took him into custody.
Lang was booked into the Shreveport City Jail and charged with a single count of Armed Robbery. Lang also had an outstanding warrant for his arrest through the Shreveport Police Department for an unrelated matter.
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