A lesbian couple was brutally stabbed to death by a stranger at the Hollywood Plaza Mall in Diamond Hill in Kowloon, Hong Kong, on June 2. What happened: According to police senior superintendent Elieen Chung Lai-yee, a 39-year-old man named Szeto Sing-Kwong purchased a 12-inch knife at a shop in the mall shortly before approaching the couple — Fong Hiu Tung, 22, and Lau Kai Hei, 26 — from behind after 5 p.m. local time. In graphic video clips circulating on social media, Szeto can be seen stabbing the short-haired woman repeatedly, causing her to fall to the ground.