MOUNT DORA, Fla. – Mount Dora police on Wednesday released video of a gunman who they say shot two store owners, killing one of them, during a robbery.Police also announced that the Crimeline reward in the case now stands at $10,000.According to Mount Dora Interim Police Chief Brett Meade the victims, Khiem Ba Trinh (Ken), 56, and Minh Nguyen (Tina), 47, were closing T&N Market on Monday night when they were shot multiple times.Nguyen was pronounced dead at the scene and Trinh was airlifted to Central Florida Regional Hospital in Sanford, where he remains in critical condition, according to Meade.Video from outside the store shows a gunman wearing dark clothing forcing Trinh back into the store, where the robbery and shooting occurred,.