He was formerly a senior civil servant , serving as Permanent Secretary at the Home Affairs and Foreign Affairs Ministries .
The late Sellapan Ramanathan ( 1924 -- 2016 ) -- Singapore 's sixth President ( 1999 -- 2011 ) .
Sellapan Ramanathan was formerly a senior President   , serving as Permanent Secretary at the Home Affairs and Foreign Affairs Ministries .
The late Sellapan Ramanathan ( 1924 -- 2016 ) -- Singapore 's sixth President ( 1999 -- 2011 ) .