Who keeps robbing area Game Stop stores?

The Fort Bend County Sheriff's Office has release surveillance images of the robbery of a Game Stop store in an unincorporated area of the county near Richmond earlier this month.
The store at 22720 Bellaire Blvd. was robbed by three people at 8:53 p.m. Sept. 4.
The three, one of whom was armed with an unknown type handgun, ordered employees to lie on the floor in the back office.
One suspect guarded the employees at gunpoint while the other two suspects stole store merchandise and an undisclosed amount of cash from the registers, according to a news release.
The suspects are described as black, in their 20s, approximately 5 feet 10 inches to 6 feet tall, slender and with muscular builds. All three wore hooded sweaters with bandanas covering their faces.
Detectives believe the same suspects are responsible for robbing the Game Stop, 1440 Fry Road in the Katy area on June 11, and the Game Stop at 403 Texas 6 in the Sugar Land area on July 2.
Anyone with information that could help detectives is asked to call Fort Bend County Crime Stoppers at 281-342-TIPS (8477), or the sheriff's office at 281-341-4665.