Temple Police Sgt. Brad Hunt said, they're investigating a possible connection to fast food robberies that happened in December of 2011 and March of 2012.
Wendy's, Bush's Chicken and Sonic in Temple were all robbed within months and share many similar details.
Each time, the hold-up happened early in the morning before the stores opened and the gunman forced employees into the store's freezer.
Hooter's General Manager Ira High said, "The man had knowledge of how the restaurant was set up. He knew details about operations."
(KCEN) -- The manager of the Hooters restaurant in Killeen was locked in a freezer after being robbed.
Now police have now released pictures of the suspect.
The robbery happened August 17.
Investigators say just before 7 a.m. the manager was in the parking lot when an armed black man jumped the privacy fence and forced him into the building.
The suspect then told the manager to take him to the office where the suspect took an undisclosed amount of money.
The suspect then had the manager disarm the alarm and locked him in the freezer.
The suspect was wearing an aqua/teal green polo shirt with a long sleeve shirt underneath, black pants, black and white shoes, a solid black fitted hat and a gray mask.
If you have any information please call police.