BC

Search crews are back in Sasamat Lake in Port Moody on the third day of their search for a missing 21-year-old woman.

Joy Zhang, who police say has the mental capacity of a 10-year-old, has been missing since Thursday.

She and a friend had separated from a group outing, but while the friend has been found, Zhang has not been seen since, even though searchers have combed through all the area's trails.

Coquitlam Search and Rescue say Zhang may be hiding because she is afraid.

Her parents have joined the search, hoping that their voices will trigger a response from her.