Police say the group shot and killed Shahzad Quraishi and Mohammad Aziz-Zubair during a robbery at their store on Harrisburg.
Two more charged in clerks' killings
HOUSTON Police have arrested and charged two more suspects in connection with their murders. Xavier Austin and Herbert Nash are charged with capital murder. Two other suspects, Casey Carmon and Minh Truong were arrested late last year and face the same charge.