The family of a woman shot and killed by an armed robber at China Wok restaurant has doubled the reward for information leading to an arrest to $10,000, authorities say.
The family of Anna Sun has offered another $5,000 in the case.
Sun was shot dead in September 2012 by an armed, masked suspect at China Wok restaurant on Silver Star Road in Pine Hills.
Investigators think the robber shot Sun in the head after the waitress, who was Chinese, didn't immediately understand his demand for cash. The killer then took money from the register and ran.
Four persons of interest were eventually interviewed but are no longer considered persons of interest.
"I do believe he's still in the area. In fact, I believe people that know him are still in the area," said Sgt. Eric Debose of the Orange County Sheriff's Office of a gunman.
"We're just asking for anyone who may have been in the area that night -- its a shopping plaza -- so we're hoping for anybody who may have been walking by, who may have heard something, to give us a call," Debose said.
Anyone with information on this case is urged to call Crimeline at 1-800-423-TIPS. Callers can remain anonymous.