Four Police Clinical Psychologists of Police Psychological Services Group (PSG), led by Senior Police Clinical Psychologist, Dr Edmond Lau, joined Tai Po District (TPDIST) Crime, TPDIST Special Duty Squad, Tai Po and Sheung Shui divisions and Police Tactical Unit "C" Coy in a late night operation, "Operation LEVINGTON' on December 5.

According to PSG Psychologist, Dr Alison Mak, the visit aimed at finding out what frontline officers would encounter whilst carrying out late night law enforcement action, and giving PSG Psychologists an opportunity to meet the officers. During the operation, officers conducted a gambling raid and arrested 30 persons.