Nitesha Sherri Martin, 16, a student at Garner High School, was arrested early Thursday morning. James Louis Garrett, 34, was also arrested. Both suspects are charged with murder, armed robbery and attempted robbery.
Raleigh police are also looking for 21-year-old Tiffini Martin, who is Sherri's sister, and 22-year-old Deon Partridge in connection with the case.
Police believe the suspects stole a green BMW from the American Pride car wash on New Bern Avenue Sunday night. Police said they later went to the Sonic drive-in restaurant on Atlantic Avenue with the intent to rob the restaurant.
"The motive was straight-up robbery from the word go," said Lt. Chris Morgan, of the Raleigh Police Department.
Employee Donald Kersey, who was shot in the face during the robbery, died Monday.
Police said one suspect drove the getaway, another served as a lookout and two of the suspects committed the murder and robbery. However, police would not say which suspects committed the acts.
On Wednesday, police recovered the vehicle they believe was used in the crime.
"We got some information and cooperation from the community. As I have said before, that is one of our biggest assets when conducting any investigation, and in this case, it certainly proved true once again," Morgan said.
Police believe Partridge is still in the area. They said he is well-known in western Wake County.
Police also said one of the suspects knew Kersey.