GWINNETT COUNTY, Ga. -- One teenager is dead and two others were injured in a single car crash in Gwinnett County.

The accident happened late Sunday night on Bogan Road in Buford.

Police said 18-year-old Triston Sadler was possibly speeding when he came around a corner.

The car hit a pothole, lost control and flipped over several times.

Sadler was ejected and killed.

Sadler's passengers, 17-year-old's Vernon Thomas and Ashtyn Roper, received non-life threatening injuries.

Friends set up a makeshift memorial to remember Sadler. Friends at Buford High School said Sadler was a great kid.

Jade Smith had 5th period with Sadler and said class wasn't the same today.

One of the passengers was also ejected. No one in the car had their seatbelt on.