Hong Kong police have launched a probe into a suspected suicide of an officer who had sustained a gunshot wound to his head. The death marked the second suspected police suicide in less than two months. A 39-year-old man was found unconscious with a pistol next to him on grassland near Muk Min Ha Tsuen on Route Twisk at around 11.44 am on Monday, police said in a statement that evening. The man, who had a gunshot wound to his head, was identified as a police constable attached to the Tsuen Wan District. A suicide note was also found at the scene. The officer was rushed to Yan Chai Hospital in …