sentences:  At the time, they were leading a "democracy seminar" and preparing pro-democracy pamphlets, when 20 security officers raided the house.In addition, Thai citizen Somsak Khunmi and two Vietnamese nationals, Nguyen The Vu, a trader, and his brother Nguyen Trong Khiem were also arrested.Three days later, on November 20, 2007, Vietnamese security police arrested Nguyen Viet Trung, a Vietnamese citizen, in Phan Thiết.