Police go undercover to catch man Undercover police officers arrested a man Friday who they believe may have exposed himself several times in the last three months near Palo Alto High School. Sgt. Sandra Brown spotted Ricardo Valencia, 34, of Redwood City, on the path behind Town and Country Village at 7:30 a.m. He matched the description provided by a Palo Alto High School student who encountered a man exposing himself and masturbating on the same path on Tuesday. Valencia appeared to be urinating in the bushes and was "furtively looking around," Brown said. "I didn't expect to see him,"...