Police are scouring the southwest side looking for an armed robbery suspect that one detective said 'may be unstable,' News Radio 1200 WOAI reports.
Police say the man in his twenties walked into the Subway in the 3200 block of Southwest Military wearing a black mask. He jammed a gun into the face of a clerk and demanded cash from the register.
While the clerk was complying and putting cash into the man's backpack, police say he suddenly, and for no reason, started firing several shots inside the store.
Nobody was hurt, and the robber ran outside.
Another employee who was in the back at the time heard the shots and ran next door to a McDonalds to call for help.
Police describe the suspect as 5 feet 2...wearing blue shorts and a grey sweatshirt.