Orange County deputies released surveillance images on Friday from the Orlando restaurant where a woman was shot and killed last month.

53-year-old Ying Sun, also known as Anna, was working at the China Wok on Silver Star Road when a gunman stormed into the restaurant and shot her after deputies say she didn't understand him.

She died at Orlando Regional Medical Center. Authorities haven't made any arrests in the case.

Sun's family told Local 6 they believe the culprit shot in cold blood and believe he will kill again.

Deputies said in a release the investigation is open and ongoing, and detectives are awaiting forensic details.