CHARLOTTE, N.C. (AP) — The family of a man stabbed to death three years ago during a Charlotte concert is planning a memorial service to spotlight the unsolved case.

Charlotte-Mecklenburg Police said that James Price’s family will gather at Sunday afternoon at Reedy Creek Park.

The 24-year-old man was at a concert with Lil Wayne and 2 Chainz on July 26, 2013, when he was stabbed in the parking lot of the Verizon Wireless Amphitheatre after an argument.

Witnesses saw several men get in a car and drive away.