Investigators say he threatened to pull the pin from the grenade while saying, "I'm not playing." He grabbed the cash and took off on foot.
The robber is described as a white, possibly Hispanic, male, 35 to 45 years old, 5'5" to 5'7" tall, stocky build, black hair, light complexion. He was wearing a dark colored jacket.
Crime Stoppers is offering up to $5,000 for information leading to the charging and arrest of this robber or any felony suspect. If this suspect looks familiar to you, or if you have information about this crime, please call the Crime Stoppers Tip Line at 713-222-TIPS (8477).