Tey Tsun Hang lost his PR status when he left the country without a re-entry permit (REP).
The former National University of Singapore (NUS) lecturer had been convicted in June 2013 of corruptly obtaining sex and gifts, including a Mont Blanc pen and an iPod, from his former student Darinne Ko, as an inducement to give her better grades.
This is a companion discussion topic for the original entry at http://education.malaysia-students.com/2014/12/nus-law-professor-in-sex-for-grades.html?m=0