The robber was silent, but he got away with cash and cigarettes early Thursday from a convenience store in northwest Fort Worth, police said.
It happened shortly before 2 a.m. at the 7-Eleven, 8421 Boat Club Road, said Lt. Paul Henderson, police spokesman.
A gunman wearing a dark hooded sweatshirt and a white bandanna over his face confronted a store employee who was stocking shelves.
He pointed a pistol at the worker, Henderson said, "waiving him to go behind the counter."
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Using hand gestures, the gunman motioned for the employee to put cash and two cartons of cigarettes into a paper bag, Henderson said.
"The suspect never spoke a word," Henderson said.
The worker was not hurt and the gunman walked out of the store, Henderson said.
A surveillance video camera recorded the robbery, but detectives were not ready to release the images on Thursday, Henderson said.
Anyone with information can call robbery detectives at 817-392-4370.