One person in custody, one believed to be still at large after early morning robbery at north Dallas Tom Thumb

Just before 5:30am this morning, Dallas police officers received a 9-1-1 call regarding a robbery at the Tom Thumb, 14999 Preston Road at Belt Line Road.
When patrol officers arrived, one of them witnessed a suspect exit out the front of the store. The suspect was taken into custody. Additional officers made entry into the store and evacuated the employees, two of whom were injured, but not seriously.
A perimeter was established around the building to locate any additional suspects inside the store. After SWAT officers responded and thoroughly searched the location, no other suspects were located. Officers do believe one suspect is still at large.
A Deputy Chief with the Dallas Police Department says these suspects may have been involved in a robbery late last night in northwest Dallas.