An aspiring music producer from Walker was killed Thursday night in a shooting during a suspected robbery that also left his cousin wounded at a Baton Rouge apartment complex.

Baton Rouge police said 22-year-old Austin Rashaad Norwood was killed around 7 p.m. while sitting in a car in the parking lot of the Ardenwood Village apartments in the 1900 block of North Ardenwood Drive.

Sgt. L'Jean McKneely, a police spokesman, said investigators believe the cousins went to the apartment complex to sell a cellphone after they had posted it for sale online.

McKneely said this isn't the first time that an online posting to sell something led to a robbery, but it's the first time that it led to a fatal shooting in Baton Rouge.

"We have advised people to go to a safe location if they're anticipating buying or selling certain items that they either posted on Craigslist or posted on some type of online site," McKneely said. "We have encouraged people to come here to police headquarters or law enforcement areas … We have surveillance cameras out here."

McKneely said investigators are hoping that the communication between the cousins and the robbers before the incident will help investigators determine the identity of the robbers.

At least 11 bullet holes could be seen in the driver’s side door of the car.  Norwood was sitting behind the wheel when the shooting started. Another man, who Norwood’s mother, Shana Allen, identified as Norwood’s cousin, was also shot in the incident, but is expected to recover.

Through tears, Allen described her son as "sweet, caring, humble, talented and quiet. Oh, there are so many things I could tell you about my baby.”

She said Norwood, who has an older brother and younger sister, was an honor roll student and didn’t have a criminal record.

Allen said she didn’t know what led to the shootings, but that her son hadn't previously spent time at those apartments. She said she believes her son was in the wrong place at the wrong time.

“I would ask the people to not assume what you do not know until you know the story. I’m like every other mother now who has lost their child," Allen said. "I know mine walked in a whole different light and that lifestyle wasn’t his. That scene wasn’t his.".

Allen's mother called her Thursday night to tell her about the shooting.

"That's all I remember and trying to get to him as fast as I could, but when I got there, my baby was already gone," Allen said.

Police said Friday that they do not have a motive in the killing.

 Allen said she she hopes police catch the shooter.

"If they don’t, (I hope) that he doesn’t have a day of rest. A day of rest. Period," she said. "No live should have gone like that.”

Follow Emma Discher on Twitter, @EmmaDischer.