Tulsa Police arrested 20-year-old Donnie Jamison on a first-degree murder complaint after he turned himself in overnight.
Officers also arrested 17-year-old Markell Woodward as the second suspect in Tulsa's 26th homicide of the year.
News On 6 was the only station on the scene where police took Woodward into custody.
Tulsa police say everything went down Friday night in the Las Americas grocery store parking lot near I-244 and Lewis.
Officers say 19-year-old Kentrael Anderson got into the suspects' car for a marijuana deal and was shot several times.
Anderson went to a hospital and died shortly after.
Homicide Sergeant Dave Walker says TPD made the arrests quickly thanks to witnesses coming forward and giving police information.
Police aren't expecting to make any other arrests in this case.