Dozens of searchers are scouring the muddy eastern slope of Mt. Tamalpais in Marin County for a hiker who has been missing since for two days.
Search crews on foot and horseback set off in search of Ruiz early Wednesday. She had told friends she was going for a hike on the mountain.
IRS Special Agent Scott O'Briant say Ruiz recently became despondent over a breakup with her boyfriend.
Agents searched the Mill Valley apartment where the couple lived and recovered the keys to her department vehicle. But they were unable to locate her handgun, which she was authorized to carry during the course of her duties.