Video shows several people going in and out of the store, located on Champlost Avenue near Water Street, on May 31 around 10 p.m.
Then, one man sparks a flame inside what appears to be a donut rack. The flames ripped through a snack aisle, and the people ran out of the 7-Eleven.
The convenience store is offering a $5,000 reward for information leading to an arrest and conviction.