SEATTLE, Wash. — A 62-year-old Kent man has been charged with killing his ex-girlfriend more than two decades ago, though her body has never turned up.

The Seattle Times reports that video-surveillance footage from a Tukwila casino that was recently reviewed by a detective led to arrest of retired car salesman Phan Kim Seng.

Investigators had long suspected Seng, who maintained over the years that Anna Nguyen had moved to Vietnam

But detectives say a long search turned up no trace of her, and she was declared dead in 2015.

Cold case investigators began taking another look at the evidence and reviewed nearly 300 hours of video footage that showed Seng was at the casino where her car was found.