"They just said, 'This is 911. How can I help you?' I was trying to finish my sentence, and we got disconnected," Li said.
Police said that Williams was the 911 operator, and that she terminated the call within a few seconds.
Li called a second time and got a different operator. By the time police arrived, however, the store manager had been shot and killed.
Houston 911 Operator Charged Over Hanging Up on Callers - NBC News