A store clerk was fatally shot during a robbery in south San Antonio Monday afternoon.

San Antonio police responded to a shooting call at the store in the 4700 block of Roosevelt around 4 p.m. 

When they arrived they found the clerk shot dead. Police say a customer entered the store and saw the clerk on the ground.

They called police. Investigators say no one actually witnessed the shooting.

Police believe this is a case of capital murder because the killer apparently was robbing the store when he shot the clerk.