School and university friends of Terence and Sammy Lau, who were killed by their father in Seattle this week, were in a state of shock and mourning last night. Fred Cogswell, principal of Newport High School where 17-year-old Terence's absence on Monday had been noted, said: 'They're trying to make sense out of something that is senseless.' Both Terence and former pupil Sammy had been members of the college's Key Club, a campus group focused on community service. Sammy, 21, had been club president in his senior year. According to one member of staff, the Lau boys had helped newly arrived Chinese youngsters adapt to their new country after emigrating. At the University of Washington, where Sammy had just completed the first year of a business administration course, he was vice-president of the Hong Kong Students' Association. Friend and fellow club member Louise Cheung, said: 'He encouraged everybody to be something and to enjoy their life. I really regret that he has died. It's such a waste - he was such a good person.' He and his brother were shot dead by father Sam Lau Lam-san who also killed his wife and then himself.