Dennis Chan, 49, was last seen on December 21, 2019, in Rowland Heights, California. His disappearance prompted a local investigation and outreach from family and friends that included community alerts, online postings, and coordination with missing persons networks.

Authorities made inquiries in the area where he was last seen, sought witness statements, and asked residents and businesses for help.

The case remains open and Dennis Chan is still listed as missing. Anyone with information about where he was on or after December 21, 2019, is asked to contact the investigators handling the case.