sentences:  The three were released two days later and expelled from Vietnam.In July and August 2010, a new series of arrests by the Vietnamese government was made.The arrests included Pham Minh Hoang, a 55-year-old French-educated lecturer in applied mathematics at the Ho Chi Minh City Institute of Technology, Duong Kim Khai (a pastor in the Mennonite Church), Tran Thi Thuy (a merchant) and Nguyen Thanh Tam (a farmer).